Window Media Player stopped working after MP installation (1 Viewer)

[Atramhasis]

MediaPortal Version: SVN 13718
Windows Version: Vista Ultimate

I left the most of my configuration out, because the problem is general.
After installation of MP + newest SVN + TV Server under Vista, the Windows Media Player stopped working!
When I try to start WMP I just got an error "Window Media Player stopped working".
I resored my Vista, WMP worked again. Then after reinstalling MP as above, WMP stopped to work again, so I think it is for sure caused by MP installation.
Maybe MP confuses WMP with some codec settings? Do anyone have an idea how to get WMP to work again without uninstalling MP?

 

[trevor]

Not just Vista related, seems I have the same issue with XP Pro and WMP v11, I have just uninstalled WPM v11 and v10 working fine..yet to put back v11 or install the latest SVN.

FixTunes broke at the same time with same error, not sure if they are related or not...

 

[Atramhasis]

I restored my system and installed MP with an older SVN from 2007-03-20 and WMP11 works fine, so I assume that the bug came in the latest SVN versions.