Update save data format and error handling.

source/funkin/ui/debug/charting/ChartEditorState.hx

@@ -5654,7 +5654,8 @@ class ChartEditorState extends UIState // UIState derives from MusicBeatState
   function handleHelpKeybinds():Void
   {
     // F1 = Open Help
-    if (FlxG.keys.justPressed.F1 && !isHaxeUIDialogOpen) {
+    if (FlxG.keys.justPressed.F1 && !isHaxeUIDialogOpen)
+    {
       this.openUserGuideDialog();
     }
   }
@@ -6543,22 +6544,22 @@ class ChartEditorState extends UIState // UIState derives from MusicBeatState
 /**
  * Available input modes for the chart editor state. Numbers/arrows/WASD available for other keybinds.
  */
-enum ChartEditorLiveInputStyle
+enum abstract ChartEditorLiveInputStyle(String)
 {
   /**
    * No hotkeys to place notes at the playbar.
    */
-  None;
+  var None;
 
   /**
    * 1/2/3/4 to place notes on opponent's side, 5/6/7/8 to place notes on player's side.
    */
-  NumberKeys;
+  var NumberKeys;
 
   /**
    * WASD to place notes on opponent's side, Arrow keys to place notes on player's side.
    */
-  WASDKeys;
+  var WASDKeys;
 }
 
 typedef ChartEditorParams =
@@ -6577,15 +6578,15 @@ typedef ChartEditorParams =
 /**
  * Available themes for the chart editor state.
  */
-enum ChartEditorTheme
+enum abstract ChartEditorTheme(String)
 {
   /**
    * The default theme for the chart editor.
    */
-  Light;
+  var Light;
 
   /**
    * A theme which introduces darker colors.
    */
-  Dark;
+  var Dark;
 }

source/funkin/ui/debug/stageeditor/StageEditorState.hx

@@ -1458,17 +1458,17 @@ class StageEditorState extends UIState
 /**
  * Available themes for the stage editor state.
  */
-enum StageEditorTheme
+enum abstract StageEditorTheme(String)
 {
   /**
    * The default theme for the stage editor.
    */
-  Light;
+  var Light;
 
   /**
    * A theme which introduces stage colors.
    */
-  Dark;
+  var Dark;
 }
 
 enum StageEditorDialogType