Already found out the source, it was from after cataclysm. Still, thanks!

Go to properties (right-click on the game in library) and then go to the BETA tab and choose 'oldcampaign' (you will get old version of From the Depths) but at least it will work......I hope ;)

Hey Kaczoch, My from the depths game got the error "Exception thrown when trying to change scene" when I tried going to the vanilla designer? I saw that you had the same issue, and I was wondering if you knew how to fix it.