Hi
I upgraded an existing Win7 x64 instalaltion with MA to Win8. So far so good. everything was working perfectly, even text to speech has been improved.
Suddenly, MA crashes when a preview movie loads (all movies are avi).
The video also doesen't start in nice arcade cabinet, it opens in the middle of the screen.
On the Windows Event Log I see following error-message:
ntdll.dll 0xc0000005
After googling for that problem, I mostly see generic responses...
If I use MA without the preview movies, everything works fine. I have no idea what the problem might be...
Does MA use specific windows features such as .Net or some specific C++ distributionals?
Hope someone can help me, I still think MA is the coolest frontend

Regards
UPDATE: Shark007 Codec was the problem. After upgrading to the newest version, videos are working fine again

Thank you for the help guys!
I hope somebody else might find this post useful!