World Editor keeps crashing on me

Level 4
Jan 26, 2014
Hi, I've been dealing some issues here. When I open World Editor, it keeps crashing like exiting on itself on 1.27b. World Editor also crashes too on Public Test version. I don't know what's causing it and I tried to uninstall the public version and delete 1.27b files too. I extract 1.21 back and patched it with 1.27b and reinstall the public version, it still keep crashing. Is there a way to fix this? I know that reforged world editor isn't crashing which it's weird.