Nero showtime wont error when playing mpegs

Just got Nero 6 ultra edition+power packs a few days ago for my new notebook.

So now that Showtime has made itself the default player for all my media files, i decide to to go ahead and use it.
Whenever i try playing an MPEG w nero showtime i get the “Nero Showtime has encountered a problem and needs to close. We are sorry for the inconvenence”…“Please tell Microsoft about this problem”… option to send report.

The reoprt data mentions Appname:showtime.exe, AppVer:, ModName:, Modver:, Offset 00019f3a.

Mpegs play fine in all other players (divx player, real player, WMP)

Anyone else getting this message?
Can someone try playing an mpeg w/ this player? I want to figure out if its a software bug or really something incompatibilt before i consider reformating/reinstalling my system.

BTW (i dont got the infamous DVD-video/Multichannel audio plugin required - message)

Thanks in advance