diff --git a/Common/Animator/ssplayer_animedecode.cpp b/Common/Animator/ssplayer_animedecode.cpp
index b694c552..86e1fa7c 100644
--- a/Common/Animator/ssplayer_animedecode.cpp
+++ b/Common/Animator/ssplayer_animedecode.cpp
@@ -41,6 +41,12 @@ SsAnimeDecoder::SsAnimeDecoder() :
 	curAnimeTotalFrame(0),
 	nowPlatTime(0) ,
 	nowPlatTimeOld(0),
+	frameDelta(0),
+	curAnimation(nullptr),
+	curSequence(nullptr),
+	myModel(nullptr),
+	project(nullptr),
+	stateNum(0),
 	curCellMapManager(),
 	partState(),
 	instancePartsHide(false),
diff --git a/Common/Animator/ssplayer_cellmap.h b/Common/Animator/ssplayer_cellmap.h
index 4f7ff8a4..32ec23df 100644
--- a/Common/Animator/ssplayer_cellmap.h
+++ b/Common/Animator/ssplayer_cellmap.h
@@ -21,9 +21,11 @@ struct SsCellValue
 	SsTexFilterMode::_enum		filterMode;	///< テクスチャのフィルタモード
 
 	SsCellValue() :  
-		cell(0) ,  
-		texture(0)
-		{}
+		cell(nullptr) ,  
+		texture(nullptr),
+		filterMode(SsTexFilterMode::_enum::nearlest),
+		wrapMode(SsTexWrapMode::_enum::clamp)
+	{}
 };
 
 class SsCelMapLinker
diff --git a/Common/Animator/ssplayer_effect.h b/Common/Animator/ssplayer_effect.h
index ebfd7a5b..3feade1e 100644
--- a/Common/Animator/ssplayer_effect.h
+++ b/Common/Animator/ssplayer_effect.h
@@ -72,31 +72,46 @@ class SsEffectRenderAtom
 
 public:
 
-	SsEffectRenderAtom() :
-		parent(0),
-		m_isInit(false),
-		m_isLive(true),
-		_lifetime(10.0f),
-		_life(1.0f),
-		rotation(0),
-		position(0,0,0),
-		scale(1.0f,1.0f),
-		m_isCreateChild(false)
-		{
-		}
+	SsEffectRenderAtom()
+	{
+		init();
+	}
+
+	SsEffectRenderAtom( SsEffectNode* refdata , SsEffectRenderAtom* _p)
+	{
+		init();
 
-	SsEffectRenderAtom( SsEffectNode* refdata , SsEffectRenderAtom* _p){
         data = refdata;
 		setParent(_p);
 
 		_lifetime = 0;
-		position = SsVector3(0,0,0);
 		scale = SsVector2(0,0);
-		rotation = 0.0f;
 	}
 
 	virtual ~SsEffectRenderAtom(){}
 
+	// コンストラクタの共通初期化処理
+	void	init()
+	{
+		position = SsVector3(0, 0, 0);
+		rotation = 0;
+		scale = SsVector2(1.0f, 1.0f);
+
+		parent = nullptr;
+		data = nullptr;
+
+		m_isLive = true;
+		m_isInit	= false;
+		m_isCreateChild = false;
+
+		_lifetime	= 10.0f;
+		_exsitTime	= 0.0f;
+		_life	= 1.0f;
+
+		undead	= false;
+		alpha	= 1.0f;
+	}
+
 	void	setParent( SsEffectRenderAtom* _p ){ parent = _p; }
     SsRenderType::_enum	getMyType(){ return SsRenderType::BaseNode;}
 
@@ -169,7 +184,7 @@ class SsEffectDrawBatch
 	std::list<SsEffectRenderAtom*> drawlist;
 
 
-	SsEffectDrawBatch() : priority(0) , dispCell(0),targetNode(0) {}
+	SsEffectDrawBatch() : priority(0) , dispCell(nullptr), targetNode(nullptr), blendType(SsRenderBlendType::_enum::Mix) {}
 	~SsEffectDrawBatch(){}
 
 	void	drawSetting();
diff --git a/Common/Animator/ssplayer_effect2.cpp b/Common/Animator/ssplayer_effect2.cpp
index af2c0423..6aca4fcc 100644
--- a/Common/Animator/ssplayer_effect2.cpp
+++ b/Common/Animator/ssplayer_effect2.cpp
@@ -625,6 +625,7 @@ void SsEffectRenderV2::particleDraw(SsEffectEmitter* e , double time , SsEffectE
 		lp.stime = drawe->stime;
 		lp.lifetime = drawe->endtime;
 		lp.pid = 0;
+		lp.rot = 0;
 
 		if ( parent )lp.pid = plp->id;
 
@@ -643,8 +644,10 @@ void SsEffectRenderV2::particleDraw(SsEffectEmitter* e , double time , SsEffectE
 				pp.pid = plp->pid;
 				//パーティクルが発生した時間の親の位置を取る
 
+				#if 0 // memo: ptime は参照されない。2025/07/09
 				int ptime = lp.stime + pp.stime;
 				if ( ptime > lp.lifetime ) ptime = lp.lifetime;
+				#endif
 
 				//逆算はデバッグしずらいかもしれない
 				parent->updateParticle( (float)lp.stime + pp.stime , &pp);
@@ -843,8 +846,9 @@ void    SsEffectRenderV2::reload()
 	layoutScale.y = (float)(this->effectData->layoutScaleY) / 100.0f;
 
 	//MEMO: cnumはスコープ内ワークなので、スマートポインタ化していません。
-	int* cnum = new int[list.size()];
-	for(size_t i=0; i<list.size(); i++)
+	int cnum_count = list.size();
+	int* cnum = new int[cnum_count];
+	for (size_t i = 0; i < cnum_count; i++)
 	{
 		cnum[i] = 0;
 	}
@@ -852,7 +856,7 @@ void    SsEffectRenderV2::reload()
 	bool _Infinite = false;
 	//パラメータを取得
 	//以前のデータ形式から変換
-	for ( size_t i = 0 ; i < list.size() ; i ++ )
+	for ( size_t i = 0 ; i < cnum_count; i ++ )
 	{
 		SsEffectNode *node = list[i];
 
diff --git a/Common/Animator/ssplayer_effect2.h b/Common/Animator/ssplayer_effect2.h
index 71b3e88c..3a2f9325 100644
--- a/Common/Animator/ssplayer_effect2.h
+++ b/Common/Animator/ssplayer_effect2.h
@@ -255,7 +255,7 @@ struct particleParameter
 	int			overrideRSeed;
 
 
-	particleParameter(){}
+	particleParameter(): delay(0.0f), overrideRSeed(0), userOverrideRSeed(false) {}
 };
 
 
diff --git a/Common/Animator/ssplayer_mesh.h b/Common/Animator/ssplayer_mesh.h
index eaa5ca49..d7a949f6 100644
--- a/Common/Animator/ssplayer_mesh.h
+++ b/Common/Animator/ssplayer_mesh.h
@@ -81,12 +81,12 @@ class SsMeshPart
 
 public:
 	SsMeshPart() :
-		isBind(false), targetCell(0)
+		isBind(false), targetCell(nullptr), targetTexture(nullptr), myPartState(nullptr)
+		, indices_num(0), tri_size(0), ver_size(0), outter_vertexnum(0)
 		, bindBoneInfo()
 		, weightColors()
 		, vertices_outer()
 		, draw_vertices()
-		, myPartState(0)
 		, vertices(), colors(), uvs(), indices()
 		, update_vertices_outer()
 		, offset_world_vertices()
@@ -95,7 +95,8 @@ class SsMeshPart
 
 
 	SsMeshPart(SsPartState* s) :
-		isBind(false), targetCell(0)
+		isBind(false), targetCell(nullptr), targetTexture(nullptr), myPartState(s)
+		, indices_num(0), tri_size(0), ver_size(0), outter_vertexnum(0)
 		, weightColors()
 		, bindBoneInfo()
 		, vertices_outer()
@@ -104,7 +105,6 @@ class SsMeshPart
 		, update_vertices_outer()
 		, offset_world_vertices()
 	{
-		myPartState = s;
 	}
 
 	~SsMeshPart()
diff --git a/Common/Helper/IsshTexture.h b/Common/Helper/IsshTexture.h
index 4c5c09f4..08522244 100644
--- a/Common/Helper/IsshTexture.h
+++ b/Common/Helper/IsshTexture.h
@@ -94,7 +94,7 @@ class	SSTextureFactory
 	static ISSTexture*	create() { return m_texture_base_class->create(); }
 
 public:
-	SSTextureFactory(){}
+	SSTextureFactory(): auto_release_baseclass(true) {}
 	SSTextureFactory(ISSTexture* texture_base_class , bool auto_release_baseclass = true)
 	{ 
 		m_myInst = this ; m_texture_base_class = texture_base_class;
diff --git a/Common/Helper/sshTask.h b/Common/Helper/sshTask.h
index c7a6ab7f..53490f9e 100644
--- a/Common/Helper/sshTask.h
+++ b/Common/Helper/sshTask.h
@@ -73,7 +73,9 @@ class treeitem :  public __myclass
 
 		if ( l > 32 ) l = 32;
 		for ( size_t i = 0 ; i < l ; i++ ) m_ident[i] = _ident[i];
-		m_ident[l+1] = 0;
+		// １バイトのオーバーラン修正
+		//m_ident[l+1] = 0;
+		m_ident[l] = 0;
 
 	}
 
@@ -176,7 +178,7 @@ class treeitem :  public __myclass
 				}
 			}
 
-			if ( root->child == sub )
+			if ( root->child == sub && sub != nullptr)
 			{
 				treeitem* temp = root->child;
 				if ( temp )
@@ -187,8 +189,7 @@ class treeitem :  public __myclass
 						temp->sibling_next->parent = root;
 					}
 				}
-				root->child = root->child->sibling_next;
-
+				root->child = root->child ? root->child->sibling_next : nullptr;
 			}
 
 			if ( root->sibling_next )
diff --git a/Common/Loader/SsEffectBehavior.cpp b/Common/Loader/SsEffectBehavior.cpp
index f698fd68..bb5598e5 100644
--- a/Common/Loader/SsEffectBehavior.cpp
+++ b/Common/Loader/SsEffectBehavior.cpp
@@ -20,23 +20,23 @@ SsEffectElementBase*	SsEffectBehavior::Factory(const char* name , libXML::XMLEle
 	SsEffectElementBase * ret = 0;
 
 	if ( strcmp( name , "Basic" ) == 0 ) ret = new ParticleElementBasic();
-	if ( strcmp( name , "OverWriteSeed" ) == 0 ) ret = new ParticleElementRndSeedChange();
-	if ( strcmp( name , "Delay" ) == 0 ) ret = new ParticleElementDelay();
-	if ( strcmp( name , "Gravity" ) == 0 ) ret = new ParticleElementGravity();
-	if ( strcmp( name , "init_position" ) == 0 ) ret = new ParticleElementPosition();
-//	if ( strcmp( name , "trans_position" ) == 0 ) ret = new ParticleElementTransPosition();
-	if ( strcmp( name , "init_rotation" ) == 0 ) ret = new ParticleElementRotation();
-	if ( strcmp( name , "trans_rotation" ) == 0 ) ret = new ParticleElementRotationTrans();
-	if ( strcmp( name , "trans_speed" ) == 0 ) ret = new ParticleElementTransSpeed();
-	if ( strcmp( name , "add_tangentiala" ) == 0 ) ret = new ParticleElementTangentialAcceleration();
-	if ( strcmp( name , "init_vertexcolor" ) == 0 ) ret = new ParticleElementInitColor();
-	if ( strcmp( name , "trans_vertexcolor" ) == 0 ) ret = new ParticleElementTransColor();
-	if ( strcmp( name , "trans_colorfade" ) == 0 ) ret = new ParticleElementAlphaFade();
-	if ( strcmp( name , "init_size" ) == 0 ) ret = new ParticleElementSize();
-	if ( strcmp( name , "trans_size" ) == 0 ) ret = new ParticleElementTransSize();
-	if ( strcmp( name , "add_pointgravity" ) == 0 ) ret = new ParticlePointGravity();
-	if ( strcmp( name , "TurnToDirection" ) == 0 ) ret = new ParticleTurnToDirectionEnabled();
-	if ( strcmp( name , "InfiniteEmit" ) == 0 ) ret = new ParticleInfiniteEmitEnabled();
+	else if ( strcmp( name , "OverWriteSeed" ) == 0 ) ret = new ParticleElementRndSeedChange();
+	else if ( strcmp( name , "Delay" ) == 0 ) ret = new ParticleElementDelay();
+	else if ( strcmp( name , "Gravity" ) == 0 ) ret = new ParticleElementGravity();
+	else if ( strcmp( name , "init_position" ) == 0 ) ret = new ParticleElementPosition();
+//	else if ( strcmp( name , "trans_position" ) == 0 ) ret = new ParticleElementTransPosition();
+	else if ( strcmp( name , "init_rotation" ) == 0 ) ret = new ParticleElementRotation();
+	else if ( strcmp( name , "trans_rotation" ) == 0 ) ret = new ParticleElementRotationTrans();
+	else if ( strcmp( name , "trans_speed" ) == 0 ) ret = new ParticleElementTransSpeed();
+	else if ( strcmp( name , "add_tangentiala" ) == 0 ) ret = new ParticleElementTangentialAcceleration();
+	else if ( strcmp( name , "init_vertexcolor" ) == 0 ) ret = new ParticleElementInitColor();
+	else if ( strcmp( name , "trans_vertexcolor" ) == 0 ) ret = new ParticleElementTransColor();
+	else if ( strcmp( name , "trans_colorfade" ) == 0 ) ret = new ParticleElementAlphaFade();
+	else if ( strcmp( name , "init_size" ) == 0 ) ret = new ParticleElementSize();
+	else if ( strcmp( name , "trans_size" ) == 0 ) ret = new ParticleElementTransSize();
+	else if ( strcmp( name , "add_pointgravity" ) == 0 ) ret = new ParticlePointGravity();
+	else if ( strcmp( name , "TurnToDirection" ) == 0 ) ret = new ParticleTurnToDirectionEnabled();
+	else if ( strcmp( name , "InfiniteEmit" ) == 0 ) ret = new ParticleInfiniteEmitEnabled();
 
 	if ( ret )
 	{
diff --git a/Common/Loader/SsEffectElement.h b/Common/Loader/SsEffectElement.h
index 03f76dae..6e2ba1fc 100644
--- a/Common/Loader/SsEffectElement.h
+++ b/Common/Loader/SsEffectElement.h
@@ -4,6 +4,7 @@
 
 #include "sstypes.h"
 #include "ssarchiver.h"
+#include "ssstring_uty.h"
 #include "SsEffectElement.h"
 
 namespace spritestudio6
@@ -119,8 +120,8 @@ typedef VarianceValue<SsU8Color>    	SsU8cVValue;
 
 template<> inline bool VarianceValue<float>::inputString( SsString _value , SsString _subvalue )
 { 
-	value = (float)atof(_value.c_str());
-	subvalue = (float)atof(_subvalue.c_str());
+	value = (float)double_from_string(_value.c_str());
+	subvalue = (float)double_from_string(_subvalue.c_str());
 
 	return true;
 }
diff --git a/Common/Loader/ssarchiver.cpp b/Common/Loader/ssarchiver.cpp
index 11d974ab..f56489a2 100644
--- a/Common/Loader/ssarchiver.cpp
+++ b/Common/Loader/ssarchiver.cpp
@@ -1,6 +1,7 @@
 #include "ssarchiver.h"
 #include "ssstring_uty.h"
 #include "sscharconverter.h"
+#include <errno.h>
 
 namespace spritestudio6
 {
@@ -47,7 +48,7 @@ bool	SsXmlIArchiver::dc( const char* name , float& member )
 	SPRITESTUDIO6SDK_AR_SELF_CHECK();
 	SsString str;
 	dc( name , str );
-	member = (float)atof( str.c_str() );
+	member = (float)double_from_string( str.c_str() );
 	if (str == "")
 	{
 		return false;
@@ -178,10 +179,10 @@ bool	SsXmlIArchiver::dc( const char* name , SsCurve& member )
 		{
 			return false;
 		}else{
-			member.startTime = (float)atof( str_list[0].c_str() );
-			member.startValue = (float)atof( str_list[1].c_str() );
-			member.endTime = (float)atof( str_list[2].c_str() );
-			member.endValue = (float)atof( str_list[3].c_str() );		
+			member.startTime = (float)double_from_string( str_list[0].c_str() );
+			member.startValue = (float)double_from_string( str_list[1].c_str() );
+			member.endTime = (float)double_from_string( str_list[2].c_str() );
+			member.endValue = (float)double_from_string( str_list[3].c_str() );
 
 			return true;
 		}
@@ -234,8 +235,8 @@ bool	SsXmlIArchiver::dc(const char* name, SsBoneBind& member)
 		}
 		else 
 		{
-			member.boneIndex = (float)atof(str_list[0].c_str());
-			member.blend = (float)atof(str_list[1].c_str());
+			member.boneIndex = (float)double_from_string(str_list[0].c_str());
+			member.blend = (float)double_from_string(str_list[1].c_str());
 
 			return true;
 		}
@@ -296,8 +297,8 @@ bool	StringToPoint2( const std::string& str , SsPoint2& point )
 		point.y = 0;
 		return false;
 	}else{
-		point.x = (float)atof( str_list[0].c_str() );
-		point.y = (float)atof( str_list[1].c_str() );
+		point.x = (float)double_from_string( str_list[0].c_str() );
+		point.y = (float)double_from_string( str_list[1].c_str() );
 	}
 
 	return true;
@@ -316,10 +317,10 @@ bool	StringToIRect( const std::string& str , SsIRect& rect )
 		rect.h = 0;
 		return false;
 	}else{
-		rect.x = (int)atof( str_list[0].c_str() );
-		rect.y = (int)atof( str_list[1].c_str() );
-		rect.w = (int)atof( str_list[2].c_str() );
-		rect.h = (int)atof( str_list[3].c_str() );
+		rect.x = (int)double_from_string( str_list[0].c_str() );
+		rect.y = (int)double_from_string( str_list[1].c_str() );
+		rect.w = (int)double_from_string( str_list[2].c_str() );
+		rect.h = (int)double_from_string( str_list[3].c_str() );
 	}
 
 	return true;
diff --git a/Common/Loader/ssarchiver.h b/Common/Loader/ssarchiver.h
index b4e13d5c..33c30e88 100644
--- a/Common/Loader/ssarchiver.h
+++ b/Common/Loader/ssarchiver.h
@@ -7,6 +7,9 @@
 #include <vector>
 #include <map>
 
+#include "../Helper/DebugPrint.h"
+
+
 // MEMO: 定義順の関係でここでusingしてしまうと問題が発生する
 // using namespace tinyxml2;
 
@@ -23,7 +26,7 @@ namespace EnumSsArchiver
 {
 	enum Type
 	{
-		unkown = 0, //不明
+		unknown = 0, //不明
 		in,			//Input
 		out,		//Output
 	};
@@ -50,10 +53,10 @@ class ISsXmlArchiver
 
 public:
 
-	virtual EnumSsArchiver::Type getType(){ return EnumSsArchiver::unkown;}
+	virtual EnumSsArchiver::Type getType(){ return EnumSsArchiver::unknown;}
 
 
-	ISsXmlArchiver(){}
+	ISsXmlArchiver(): m_xml(nullptr) {}
 	virtual ~ISsXmlArchiver(){}
 
 	libXML::XMLElement*	getxml(){ return m_xml;} 
diff --git a/Common/Loader/ssattribute.cpp b/Common/Loader/ssattribute.cpp
index a0aa3f0e..1ac805db 100644
--- a/Common/Loader/ssattribute.cpp
+++ b/Common/Loader/ssattribute.cpp
@@ -1,6 +1,7 @@
 #include "ssloader.h"
 #include "sstypes.h"
 #include "ssattribute.h"
+#include "ssstring_uty.h"
 #include "../Helper/DebugPrint.h"
 
 namespace spritestudio6
@@ -359,8 +360,8 @@ void	GetSsDeformAnime(const SsKeyframe* key, SsDeformAttr& v)
 			if (cnt < datasize)
 			{
 				int idx = (int)atoi(str_list[1 + (cnt * 3)].c_str());		//index
-				float x = (float)atof(str_list[2 + (cnt * 3)].c_str());	//x
-				float y = (float)atof(str_list[3 + (cnt * 3)].c_str());	//y
+				float x = (float)double_from_string(str_list[2 + (cnt * 3)].c_str());	//x
+				float y = (float)double_from_string(str_list[3 + (cnt * 3)].c_str());	//y
 
 
 				if (i == idx)
diff --git a/Common/Loader/ssattribute.h b/Common/Loader/ssattribute.h
index 83c75f97..91d78bb7 100644
--- a/Common/Loader/ssattribute.h
+++ b/Common/Loader/ssattribute.h
@@ -58,7 +58,7 @@ class	SsAttribute	//Tag毎に存在する
 	AttributeKeyDic		key_dic;
 
 public:
-	SsAttribute(){}
+	SsAttribute(): tag(SsAttributeKind::_enum::invalid) {}
 	virtual ~SsAttribute(){
 		for ( AttributeKeyList::iterator itr = key.begin() ; 
 			itr != key.end() ; itr ++ ) delete (*itr);
diff --git a/Common/Loader/ssloader_ssae.cpp b/Common/Loader/ssloader_ssae.cpp
index e0a266d2..b615fe0e 100644
--- a/Common/Loader/ssloader_ssae.cpp
+++ b/Common/Loader/ssloader_ssae.cpp
@@ -4,6 +4,19 @@
 namespace spritestudio6
 {
 
+// アニメーション設定。初期値はエディタ(v7.4.2時点)に合わせた。
+SsAnimationSettings::SsAnimationSettings()
+	: fps(30)
+	, frameCount(11)
+	, sortMode(SsPartsSortMode::_enum::prio)
+	, canvasSize(320, 320)
+	, pivot(0, 0)
+	, startFrame(0)
+	, endFrame(10)
+{
+}
+
+
 SsAnimePack*	ssloader_ssae::Parse(const char* xmlstr , size_t len)
 {
 	libXML::XMLDocument xml;
diff --git a/Common/Loader/ssloader_ssae.h b/Common/Loader/ssloader_ssae.h
index 3c30b81d..0b11ce2a 100644
--- a/Common/Loader/ssloader_ssae.h
+++ b/Common/Loader/ssloader_ssae.h
@@ -28,7 +28,7 @@ class SsAnimationSettings
 	int						startFrame;		//!< アニメーションの開始フレーム
 	int						endFrame;		//!< アニメーションの終了フレーム
 
-	SsAnimationSettings(){}
+	SsAnimationSettings();
 	virtual ~SsAnimationSettings(){}
 public:
 
@@ -109,7 +109,11 @@ class	SsPart
 
 public:
 	SsPart() : 
-	  name("") , arrayIndex(0), parentIndex(0) , show(0) , locked(0) , maskInfluence(true)
+	  name("") , arrayIndex(0), parentIndex(0) , show(0) , locked(0) , maskInfluence(true),
+		type(SsPartType::_enum::invalid),
+		boundsType(SsBoundsType::_enum::none),
+		inheritType(SsInheritType::_enum::parent),
+		alphaBlendType(SsBlendType::_enum::mix)
 	  {
 			refEffectName = "";
 			boneLength = 0;
@@ -266,7 +270,7 @@ class SsModel
 
 
 public:
-	SsModel(){}
+	SsModel(): setupAnimation(nullptr) {}
 	virtual~ SsModel()
 	{
 		for ( std::vector<SsPart*>::iterator itr = partList.begin() ; 
@@ -320,6 +324,8 @@ class SsLabel
 	SsString	name;	///< 名前 [変数名変更禁止]
 	int			time;	///< 設置された時間(フレーム) [変数名変更禁止]
 
+	SsLabel(): time(0) {}
+
 	SPRITESTUDIO6SDK_SERIALIZE_BLOCK
 	{
 		SPRITESTUDIO6SDK_SSAR_DECLARE( name );
@@ -342,7 +348,7 @@ class SsAnimation
 	bool						isSetup;		///< セットアップアニメか？
 
 public:
-	SsAnimation(){}
+	SsAnimation(): overrideSettings(false), isSetup(false) {}
 	virtual ~SsAnimation()
 	{
 		for ( std::vector<SsPartAnime*>::iterator itr = partAnimes.begin() ; 
diff --git a/Common/Loader/ssloader_ssce.h b/Common/Loader/ssloader_ssce.h
index 99c0e5f3..cfb4a839 100644
--- a/Common/Loader/ssloader_ssce.h
+++ b/Common/Loader/ssloader_ssce.h
@@ -37,7 +37,7 @@ class SsCell
 	int	divw;
 	int	divh;
 
-	SsCell(){}
+	SsCell(): rotated(false), ismesh(false), divtype(SsMeshDivType::_enum::polyline_base), divw(1), divh(1) {}
 	virtual ~SsCell() {
 /*
 		for (std::vector<SsVector2*>::iterator itr = innerPoint.begin();
@@ -102,7 +102,7 @@ class SsCellMap
 	SsString					loadFilepath;		///<実際にロードした場所
 
 
-	SsCellMap(){}
+	SsCellMap(): overrideTexSettings(false), wrapMode(SsTexWrapMode::_enum::clamp), filterMode(SsTexFilterMode::_enum::nearlest) {}
 	virtual ~SsCellMap()
 	{
 		for ( std::vector<SsCell*>::iterator itr = cells.begin() ; 
diff --git a/Common/Loader/ssloader_ssee.h b/Common/Loader/ssloader_ssee.h
index 989bac11..93c7d1cd 100644
--- a/Common/Loader/ssloader_ssee.h
+++ b/Common/Loader/ssloader_ssee.h
@@ -90,8 +90,8 @@ class SsEffectNode : public SimpleTree
 
 public:
 	SsEffectNode() :
-	  arrayIndex(0), parentIndex(0),	
-		  type(SsEffectNodeType::invalid)
+	  arrayIndex(0), parentIndex(0), type(SsEffectNodeType::invalid), visible(true)
+			
 	{}
 	~SsEffectNode(){}
 
@@ -129,7 +129,7 @@ class SsEffectModel
 
 
 public:
-	SsEffectModel() : root(0)
+	SsEffectModel() : root(nullptr), lockRandSeed(false), isLockRandSeed(false), fps(30), layoutScaleX(1), layoutScaleY(1)
 	{}
 
 	virtual ~SsEffectModel(){
diff --git a/Common/Loader/ssloader_sspj.cpp b/Common/Loader/ssloader_sspj.cpp
index 1ad69c69..2e4640bc 100644
--- a/Common/Loader/ssloader_sspj.cpp
+++ b/Common/Loader/ssloader_sspj.cpp
@@ -162,8 +162,7 @@ SsProject*	ssloader_sspj::Parse_ProjectOnly(const char* xmlstr , size_t len)
 		proj->__Serialize( &ar );
 		return proj;
 	}
-
-	return 0;
+	return nullptr;
 }
 
 SsProject*	ssloader_sspj::Load(const std::string& filename ) {
diff --git a/Common/Loader/ssloader_sspj.h b/Common/Loader/ssloader_sspj.h
index c2336a45..5b2a8a22 100644
--- a/Common/Loader/ssloader_sspj.h
+++ b/Common/Loader/ssloader_sspj.h
@@ -53,7 +53,7 @@ class	SsProjectSetting
 
 	int							vertexAnimeFloat;			//!< 頂点変形アトリビュートの少数対応
 
-	SsProjectSetting() 
+	SsProjectSetting(): wrapMode(SsTexWrapMode::_enum::clamp), filterMode(SsTexFilterMode::_enum::nearlest), queryExportBaseDirectory(false)
 	{
 		vertexAnimeFloat = false;							//!< SpriteStudio6.1以前のデータの場合は存在しないのでOFFを初期値とする
 	}
diff --git a/Common/Loader/ssloader_ssqe.h b/Common/Loader/ssloader_ssqe.h
index eec21cb1..11a7b0ea 100644
--- a/Common/Loader/ssloader_ssqe.h
+++ b/Common/Loader/ssloader_ssqe.h
@@ -23,7 +23,7 @@ class SsSequenceItem
 	int						repeatCount;	/// 繰り返し再生回数
 
 public:
-	SsSequenceItem(){}
+	SsSequenceItem(): repeatCount(1) {}
 	virtual ~SsSequenceItem()
 	{
 	}
@@ -46,7 +46,7 @@ class SsSequence
 	std::vector<SsSequenceItem*>	list;		/// このシーケンスがもつアイテムのリスト
 
 public:
-	SsSequence(){}
+	SsSequence(): index(0), type(SsSequenceType::_enum::last) {}
 	virtual ~SsSequence()
 	{
 		for ( std::vector<SsSequenceItem*>::iterator itr = list.begin() ; 
diff --git a/Common/Loader/ssstring_uty.cpp b/Common/Loader/ssstring_uty.cpp
index 3e6d39ff..e6cbc41b 100644
--- a/Common/Loader/ssstring_uty.cpp
+++ b/Common/Loader/ssstring_uty.cpp
@@ -1,6 +1,7 @@
 #include <string>
 #include <vector>
 #include <algorithm>
+#include "../Helper/DebugPrint.h"
 
 #ifdef _WIN32
 #include <direct.h>
@@ -71,21 +72,26 @@ std::string path2file(const std::string &path) {
 
 
 
-bool	is_digit_string( std::string &in_str , bool* is_priod )
+bool	is_digit_string( std::string &in_str , bool* has_period )
 {
 	std::istringstream in(in_str);
 	 char c;
 
-	if ( is_priod != NULL )*is_priod = false;
+	if ( has_period != NULL ) *has_period = false;
 
-	while (in)
+	if (in_str.empty())
+	{
+		// 空文字列は数字ではない
+		return false;
+	}
+
+	while (in.get(c))
 	{
-		in.get(c);
 		if ( c < 0 ) return false;
 
 		if ( c =='.' )
 		{
-			if ( is_priod != NULL )*is_priod = true;
+			if ( has_period != NULL ) *has_period = true;
 		}
 		if ( !(isdigit( c ) || c =='.' || c=='-' || c=='+' ) )
 		{
@@ -261,5 +267,36 @@ bool checkFileVersion(std::string fileVersion, std::string nowVersion)
 	return ret;
 }
 
+double double_from_string(const char* str, bool* success)
+{
+	if (success)
+		*success = false;
+
+	if (str == nullptr || *str == '\0')
+	{
+		// Invalid input
+		return 0.0f;
+	}
+	errno = 0;
+	char* endptr;
+	double result = strtod(str, &endptr);
+	if (endptr == str)
+	{
+		// No conversion could be performed
+		//SS_WARN_PRINT("No conversion could be performed");
+		//SS_WARN_PRINT(str);
+		return 0.0f;
+	}
+	if (errno == ERANGE)
+	{
+		// Underflow or overflow occurred but result is still valid
+		return result;
+	}
+
+	if (success)
+		*success = true;
+
+	return result;
+}
 
 }	// namespace spritestudio6
diff --git a/Common/Loader/ssstring_uty.h b/Common/Loader/ssstring_uty.h
index e4777c15..6dbedc87 100644
--- a/Common/Loader/ssstring_uty.h
+++ b/Common/Loader/ssstring_uty.h
@@ -63,6 +63,13 @@ std::string nomarizeFilename( std::string str );
 */
 bool checkFileVersion(std::string fileVersion, std::string nowVersion);
 
+/*
+* @brief 文字列をdouble型に変換します。
+* @param[in] str 変換する文字列
+* @param[out] success 変換に成功したかどうかを示すフラグ
+* retval 変換したdouble値
+*/
+double double_from_string(const char* str, bool* success = nullptr);
 
 
 class SsStringTokenizer
@@ -73,7 +80,7 @@ class SsStringTokenizer
 	int	tokennum;
 
 public:
-	SsStringTokenizer() {}
+	SsStringTokenizer(): tokenIndex(0), tokennum(0) {}
 	virtual ~SsStringTokenizer() {}
 
 	SsStringTokenizer(std::string src_str ,  char token ) {
@@ -95,7 +102,7 @@ class SsStringTokenizer
 	{
 		if (isEnd()) return false;
 		std::string str = string_array[tokenIndex];
-		*out = (float)atof(str.c_str());
+		*out = (float)double_from_string(str.c_str());
 		tokenIndex++;
 		return !isEnd();
 	}
diff --git a/Common/Loader/sstypes.h b/Common/Loader/sstypes.h
index f9f25f4b..eed107f9 100644
--- a/Common/Loader/sstypes.h
+++ b/Common/Loader/sstypes.h
@@ -366,7 +366,7 @@ class SsCurve
 
 	bool	syncStartEnd;	///< [編集用パラメータ]カーブエディタでの編集時に始点・終点ハンドルを同期して動かすか？
 
-	SsCurve() : startTime(0.f), startValue(0.f), endTime(0.f), endValue(0.f), startKeyTime(0.f), endKeyTime(0.f){}
+	SsCurve() : startTime(0.f), startValue(0.f), endTime(0.f), endValue(0.f), startKeyTime(0.f), endKeyTime(0.f), syncStartEnd(true) {}
 	~SsCurve(){}
 
 };
@@ -792,8 +792,9 @@ struct SsRefCell
 	int			mapid;
 	std::string	name;
 
-	
+	SsRefCell(): mapid(0) {}
 };
+
 class SsUserDataAnime
 {
 public:
@@ -811,7 +812,8 @@ class SsUserDataAnime
 		useInteger(false),
 		usePoint(false),
 		useRect(false),
-		useString(false)
+		useString(false),
+		integer(0)
 	{}
 };
 
diff --git a/Common/Loader/ssvalue.h b/Common/Loader/ssvalue.h
index db2abc3f..93f5b180 100644
--- a/Common/Loader/ssvalue.h
+++ b/Common/Loader/ssvalue.h
@@ -23,7 +23,7 @@ void	SsValueSeriarizer( ISsXmlArchiver* ar , SsValue& v , const std::string key
 class SsValue{
 public:
 	enum{
-		unkown,
+		unknown,
 		string_type,
 		int_type,
 		float_type,
@@ -44,6 +44,7 @@ class SsValue{
 		bool					_bool;
 		SsArray*				_array;
 		SsHash*					_hash;
+		void*					_ptr;
 	};
 
 	int		_int_temp;
@@ -51,101 +52,112 @@ class SsValue{
 	bool	_bool_temp;
 
 
-	SsValue() : type(unkown) , _str(0){}
+	SsValue(): type(unknown) { init(); }
 
-	explicit SsValue(bool b ) : type(boolean_type) {  _bool = b; }
+	explicit SsValue(bool b) : type(boolean_type) { init(); _bool = b; }
 	explicit SsValue(int n, char* org = 0) : type(int_type) {
+		init();
 		_int = n; 
 		if (org)
 			org_txt = SsString(org);
 	}
 	explicit SsValue(float n, char* org = 0) : type(float_type)
 	{ 
+		init();
 		_float = n; 
 		if (org)
 			org_txt = SsString(org);
 
 	}
-	explicit SsValue(SsString& str)   {  type = string_type; _str = new SsString(str); }
-	explicit SsValue(const char* str)   {  type = string_type; _str = new SsString(str); }
+	explicit SsValue(SsString& str)   { init(); type = string_type; _str = new SsString(str); }
+	explicit SsValue(const char* str)   { init(); type = string_type; _str = new SsString(str); }
 	explicit SsValue(SsArray& n)
-	  { 
-			type = array_type; 
-			_array = new SsArray(n);
-		}
+	{ 
+		init();
+		type = array_type; 
+		_array = new SsArray(n);
+	}
 
 
-	explicit SsValue(SsHash& n)  { type = hash_type; _hash = new SsHash(n); }
+	explicit SsValue(SsHash& n)  { init(); type = hash_type; _hash = new SsHash(n); }
 
 
     SsValue(const SsValue& x)
 	{
-
-		switch( x.type )
-		{
-			case string_type:
-				_str = new SsString( *x._str );
-				_float_temp = (float)atof( _str->c_str() );
-				_int_temp = atoi( _str->c_str() );
-				break;
-			case int_type:
-				_int = x._int;
-				_float_temp = (float)_int;
-				_bool_temp = _int == 1 ? true : false;
-				break;
-			case float_type:
-				_float = x._float;
-				_int_temp = (int)_float;
-				_bool_temp = _int > 0 ? true : false;
-				break;
-			case boolean_type:
-				_bool = x._bool;
-				break;
-			case array_type:
-				_array = new SsArray( *x._array);
-				break;
-			case hash_type:
-				_hash = new SsHash( *x._hash);
-				break;
-		}
-		type = x.type;
-		org_txt = x.org_txt;
-
+		*this = x;
 	}
     SsValue& operator=(const SsValue& x)
 	{
-		if (this != &x) {
-			this->release();
-			new (this) SsValue(x);
+		type = x.type;
+		name = x.name;
+		org_txt = x.org_txt;
+
+		// This is not enough because temp values must be determined by the value of my type which is string, int, float and boolean.
+		_int_temp = x._int_temp;
+		_float_temp = x._float_temp;
+		_bool_temp = x._bool_temp;
+
+		switch (x.type)
+		{
+		default:
+		case unknown:
+			_ptr = x._ptr;
+			break;
+		case string_type:
+			_str = new SsString(*x._str);
+			_float_temp = (float)double_from_string(x._str->c_str());
+			_int_temp = atoi(_str->c_str());
+			break;
+		case int_type:
+			_int = x._int;
+			_float_temp = (float)_int;
+			_bool_temp = _int == 1 ? true : false;
+			break;
+		case float_type:
+			_float = x._float;
+			_int_temp = (int)_float;
+			_bool_temp = _float > 0.0f ? true : false;
+			break;
+		case boolean_type:
+			_bool = x._bool;
+			_int_temp = _bool ? 1 : 0;
+			_float_temp = _bool ? 1.0f : 0.0f;
+			break;
+		case hash_type:
+			_hash = new SsHash(*x._hash);
+			break;
+		case array_type:
+			_array = new SsArray(*x._array);
+			break;
 		}
 		return *this;
 	}
 
-	void	release()
+	void	init()
 	{
-		name.~SsString();
-		org_txt.~SsString();
+		_ptr = nullptr;
+		_int_temp = 0;
+		_float_temp = 0.0f;
+		_bool_temp = false;
+	}
 
-		if(type == string_type && _str) {
+	virtual ~SsValue() {
+		if (type == string_type && _str) {
 			delete _str;
 			return;
 		}
 
-		if(type == array_type && _array) {
+		if (type == array_type && _array) {
 			delete _array;
 			return;
 		}
-		if(type == hash_type && _hash)
+		if (type == hash_type && _hash)
 		{
 			delete _hash;
 			return;
 		}
 	}
 
-	virtual ~SsValue() {
-		release();
-	}
-
 	template <typename T> bool is() const;
 	template <typename T> const T& get() const;
 	template <typename T> T& get();
@@ -315,13 +327,13 @@ template <> inline bool SsValue::is<SsHash>() const {
 inline static  SsValue	SsValueSeriarizer__MakeValue( const char* v )
 {
     std::string temp = v;
-	bool is_priod;
+	bool has_period;
 
-	if ( is_digit_string( temp , &is_priod) )
+	if ( is_digit_string( temp , &has_period) )
 	{
-		if ( is_priod )
+		if ( has_period )
 		{
-			return SsValue( (float)atof( v ) , (char*)v );
+			return SsValue( (float)double_from_string( v ) , (char*)v );
 		}
 
 		return SsValue( (int)atoi( v ), (char*)v);