STEPS TO REPRODUCE
1. Launch CrazyTalk 8
2. Apply a random 2D project (e.g. 03 Sarcastic Cat)
3. Open Timeline, click "Face Key Editor" button
4. On "Face Key Editor" panel, choose "Muscle"
5. Select a random part (e.g. Right Eye) and click "Head Move", then move the mouse on the panel
6. Close the program

ACTUAL RESULT
Program crashes

EXPECTED RESULT
The program can be closed normally after modified the settings on Face Key Edit panel