I had this same thing,i found it was to do with plug-ins in wmp11.
i disabled the windows live plug in and the msn media bar plug in and now
all works ok.
"henrikwl" wrote:
> Greetings!
>
> I have a problem with my Media Player 11 on Vista Ultimate. Whenever it is
> started, it simply exits - no window ever popping up, no event logged,
> nothing. This happes regardless of whether I run it as Admin, as a user,
> whether I start it via shortcut or double-click a .wm* file.
>
> I tried the fix in http://support.microsoft.com/kb/925704 but it didn't
> help. Has anybody got any idea what's wrong?