diff --git a/Assets/SmartAddresser/Editor/Core/Tools/Importer/SmartAddresserAssetPostProcessor.cs b/Assets/SmartAddresser/Editor/Core/Tools/Importer/SmartAddresserAssetPostProcessor.cs
index 0720abd..ef7c086 100644
--- a/Assets/SmartAddresser/Editor/Core/Tools/Importer/SmartAddresserAssetPostProcessor.cs
+++ b/Assets/SmartAddresser/Editor/Core/Tools/Importer/SmartAddresserAssetPostProcessor.cs
@@ -20,12 +20,13 @@ string[] movedFromAssetPaths
         )
         {
             var addressableSettings = AddressableAssetSettingsDefaultObject.Settings;
-            var beforeHash = addressableSettings.currentHash;
 
             // Check this because AddressableAssetSettingsDefaultObject.Settings may be null at this point when the Library folder is deleted.
             if (addressableSettings == null)
                 return;
 
+            var beforeHash = addressableSettings.currentHash;
+
             if (!ShouldProcess(importedAssetPaths, deletedAssetPaths, movedAssetPaths, movedFromAssetPaths))
                 return;