A new version of the GDE has been uploaded with various bug fixes:
Trying to create a game object thats doesn't exist will only warn you now instead of crashing the program.
Using ctrl+C and V will no longer jump your selection to comment actions.
Game Object names below 3 characters will warn you instead of crashing the program.
If you try to apply an action to an object that doesn't exist you will be warned.
Moveing actions up and down now works properly.