arablizzard2413: Good luck with that, I've lost count of the number of times I submitted support tickets for KQ Mask of Eternity telling them exactly where the game is crashing and why and they always get ignored. So don't hold your breath waiting for GOG to fix something.
OlausPetrus: GOG has patched their Sierra games few times, there was for example major patch to Quest for Glory -series which fixed several issues which had been reported here on the forums. Fixing KQ6 cutscene problem is easy task for them to do (it takes about 10 seconds to fix it if you have the right file) and I believe they will do it.
However it's huge pain in the backside to get Mask of Eternity to work correctly. I have the disc version and I haven't tried running it on Win7 64bit yet, but it was already very annoying with XP. There are several locations in the game where game can crash and sometimes only way I could get past those issues was to turn off glide emulator and play it from 1st person view. I don't think that GOG has resources and ability to fix all those crashes, but they probably have made it less painful than what playing the CD version is.
I run KQ8 on Win7 64bit. I haven't had any problems, other than the standard crashes that I've had on every system... The same way I used to get past those problems on other systems still work.
The disk version of KQ8 won't even install on later windows, without using that fan installation program.
The biggest issue they really need to fix, is the cd drive check... Since people should't have to install a virtual drive software.