Ok, I think the problem is having vvvv under my user directory which has “funny characters” like ‘ö’ in it which still seems to be a way to frequent cause of software errors…
Same alpha will run from C:\vvvv-test\vvvv_45alpha31.6_x86
strange. could also be related to restrictive file permissions. tried with a folder containing characters outside of ascii range on win8.1 and had no issues…