Thanks for your answers!
Well, like I said Wavelab is crashing when I exit the program and recently even when I try to move a section from an audio file. I’ve been using WL for years now (more or less) without problems and since two weeks this problem occurs. The odd thing about it is that I didn’t install any new programs or updates, neither did I change any settings on my computer…
I am using Wavelab 7.2.1.600 64bit on Windows 7 Professional 64bit.