Brenny,
if you have a still/freeze-menu, you dont need to loop it, so why you are doing this?
there are indeed a lot bugs within encore, but you can´t blame them for a problem with power DVD 10. what is this software doing, if you playback your BD? what would happen then? nothing or a complete different track?
maybe power DVD (as it orginaly is a DVD-playback-software) would like to play track 1 (within VTS1 on DVD), as this is what a lot players doing, when playing replicated DVDs and if there is no video-track as firstplay prior the first menu.
within BD there is no more difference between VTS, VTSM, or VMG – a blu-ray only contains clips in playlists, that are placed in a title.
all assets placed in a clip, there´s no difference if it´s a menu or a feature film or whatever.
cheers
danny