Unhandled Error *FIXED*

[DrewCCU]

Error: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Version: AGS 3.1.2.82

System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
  at GetSpriteHeight(Int32 )
  at AGS.Native.NativeMethods.GetActualSpriteHeight(Int32 spriteSlot)
  at AGS.Editor.NativeProxy.GetActualSpriteHeight(Int32 spriteSlot)
  at AGS.Editor.ObjectsEditorFilter.GetSpriteHeightForGameResolution(Int32 spriteSlot)
  at AGS.Editor.ObjectsEditorFilter.PaintToHDC(IntPtr hDC, RoomEditorState state)
  at AGS.Editor.RoomSettingsEditor.bufferedPanel1_Paint(Object sender, PaintEventArgs e)
  at System.Windows.Forms.Control.OnPaint(PaintEventArgs e)
  at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
  at System.Windows.Forms.Control.WmPaint(Message& m)
  at System.Windows.Forms.Control.WndProc(Message& m)
  at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
  at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
  at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
  at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

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Don't know exactly what caused this.  I just know that whenever i try to load a room in my game and edit objects I get this error.

I've searched through the forums for similar problems but no one seems to be giving any answers out.  What's the deal?

[DrewCCU]

I figured out that I had to actually copy/replace the sprite file (acsprset.spr) from a backup copy of my game into the current game.  This fixed the problem ... however i have to reimport some images.