diff --git a/src/player.cpp b/src/player.cpp
index 5d8c871..6a934bb 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -71,7 +71,8 @@ void Player::timeout() {
 void Player::autoHideTimeout() {
   if (m_autoHideDuration > 0) {
     m_autoHideDuration -= m_timerAutoHide.interval();
-    emit pulse(tick() - m_pauseStart + m_lastSubtitles.at(0)->msseStart());
+    if (!m_lastSubtitles.isEmpty())
+      emit pulse(tick() - m_pauseStart + m_lastSubtitles.at(0)->msseStart());
   } else {
     emit autoHide();
     m_timerAutoHide.stop();
@@ -115,7 +116,7 @@ const QList<Subtitle *> Player::current() const { return m_lastSubtitles; }
 
 void Player::updateCurrent(quint64 msecsElapsed) {
   // Sanity check
-  if (m_script == 0)
+  if (m_script == nullptr)
     return;
   // Find subtitles that match elapsed time
   QList<Subtitle *> currentSubtitles = m_script->currentSubtitles(msecsElapsed);
diff --git a/src/script.cpp b/src/script.cpp
index 14f9b03..8cd45d3 100644
--- a/src/script.cpp
+++ b/src/script.cpp
@@ -95,7 +95,11 @@ Script::Script(const QString &p_fileName, int p_charsRate,
 
 Script::ScriptFormat Script::format() const { return m_format; }
 
-quint64 Script::totalDuration() const { return m_subtitles.last()->msseEnd(); }
+quint64 Script::totalDuration() const {
+  if (m_subtitles.isEmpty())
+    return 0;
+  return m_subtitles.last()->msseEnd();
+}
 
 const QString &Script::fileName() const { return m_fileName; }
 
@@ -112,8 +116,11 @@ int Script::subtitleMinDuration() const { return m_subtitleMinDuration; };
 
 SubtitleStyle *Script::style(const QString &p_name) const {
   // If style is unknown, return first one.
-  if (!m_styles.contains(p_name))
+  if (!m_styles.contains(p_name)) {
+    if (m_styles.isEmpty())
+      return nullptr;
     return m_styles[m_styles.keys().at(0)];
+  }
   return m_styles[p_name];
 }
 
@@ -394,6 +401,8 @@ void Script::loadFromSrt(QStringList content) {
       new SubtitleStyle(tr("Default"), font, Qt::white, this);
   m_styles[style->name()] = style;
 
+  if (content.isEmpty())
+    return;
   // Make sure its ends with empty line
   if (!content.last().isEmpty())
     content.append(QString());
@@ -443,6 +452,8 @@ void Script::loadFromTxt(QStringList content) {
       new SubtitleStyle(tr("Default"), font, Qt::white, this);
   m_styles[style->name()] = style;
 
+  if (content.isEmpty())
+    return;
   // Make sure its ends with empty line
   if (!content.last().isEmpty())
     content.append(QString());