fixes

lib/stateManagement/hierarchy/FileHierarchy.dart

@@ -207,7 +207,12 @@ class OpenHierarchyManager with HasUuid, Undoable, HierarchyEntryBase implements
         print("$e\n$s");
       }
       //check if extracted folder actually contains all dat files
-      if (datFilePaths == null || datFilePaths.isNotEmpty && await Future.any(datFilePaths.map((name) async => !await File(name).exists()))) {
+      var shouldExtractDatFiles = false;
+      if (!shouldExtractDatFiles)
+        shouldExtractDatFiles = datFilePaths == null;
+      if (!shouldExtractDatFiles)
+        shouldExtractDatFiles = datFilePaths.isNotEmpty && await Future.any(datFilePaths.map((name) async => !await File(name).exists()));
+      if (shouldExtractDatFiles) {
         await extractDatFiles(datPath, shouldExtractPakFiles: true);
       }
     }
@@ -463,7 +468,7 @@ class OpenHierarchyManager with HasUuid, Undoable, HierarchyEntryBase implements
     else {
       wtpPath = join(datDir, wtpName);
       if (!await File(wtpPath).exists()) {
-        showToast("Can't find corresponding WTP file");
+        messageLog.add("Can't find WTP file of ${basename(wtaPath)}");
         throw Exception("Can't find corresponding WTP file");
       }
     }

lib/stateManagement/hierarchy/types/DatHierarchyEntry.dart

@@ -80,8 +80,6 @@ class DatHierarchyEntry extends ExtractableHierarchyEntry {
         rubyScriptGroup.isCollapsed.value = true;
     }
 
-    for (var child in children)
-      print("${child.name.value} ${child.runtimeType} ${child.priority}");
     sortChildren((a, b) {
       if (a.priority != b.priority)
         return b.priority - a.priority;

lib/stateManagement/preferencesData.dart

@@ -36,7 +36,7 @@ class SavableProp<T> extends ValueProp<T> {
     if (T == ThemeType)
       return val != null ? ThemeType.values[val as int] as T : null;
     if (T == List || T == Map)
-      return val != null ? jsonDecode(val as String) as T : null;
+      return val is String ? jsonDecode(val) as T : val as T?;
     return val as T?;
   }