JudasIscariot: Deadlypain:
If you are having problems with our version of the game and you have tried the usual fixes (running as administrator, changing compatibility settings, installing the game outside of C:\Program Files etc.), please don't hesitate to send our Support team a message with your DXDiag attached. Please give as many details as you can about your problem so that we can try to narrow this down for you.
Smannesman: Wow that's very nice, you guys will try to fix a problem for a non-GOG (bought) game?
That's very saintly of you.
I'll quote Deadlypain for clarity's sake:
"No no no, it is the GOG version im getting with the blackscreen, so yes, it occurs in the version you sell, however it might be an issue with my computer not your actual version. "
Source is the post just above mine :D