I can confirm that MovieShop v4.3 runs fine here with OS3.2.1. Not sure what's different about your system, I'm using an RTG screen (Picasso IV) with P96 v2.1b.
Did you remember to run 'VMinit' first to initalise the VLab Motion board? Not sure what happens if you don't.
Attached is the SnoopDOS log of it starting normally, plus a screen shot.
And this is my system configuration if you wanted to compare anything:
http://amiga.serveftp.net/sysinfo.xgi
