I was working on my special project when I decided to make a backup so if I mess up, there's a backup to go back to, so I started to export object.
Guess what? DesktopX suddenly used 750 MB ram and of course it crashed.
Well I checked out my current theme folder to recover it. Guess what? Folder is empty!! WTF??
I tried to run it again and there it is, my project. It looked normal. Till I tried to use it. All scripts is gone! What the heck happened??