Apple Trailers won't play

I loaded the newest (at the time)  T3CH build with a regular old television and had no problems.  Yesterday I bought an HDTV and ran the xbox HD component cables and everything looked great.  However when I attempted to play movie trailers it would load them but never play them. After the loading window closed I was back to the regular AMT menu although the trailer i had selected was grayed out as if it played.

I reloaded XBMC and ran into the same problem again although this time I received a quot;playlist playback aborted too many consecutive failed itemsquot; error message.  On occaision while loading an audio codec the entire operation will freeze up and i have to restart the xbox.

I'm not really sure where to begin?  Maybe an older version of AMT?

AMT version pre-0.99.4a-2091
XBMC T3CH build SVN_2008-04-20_rev12746
Xbox V 1.0

All help is greatly appreciated

HMLJ