Hi, sorry for the late reply, I only just noticed your message about the expansion.
Gave it a go today. I could get into the game but not select any difficulty. Maybe there is no difficulty for the expansions?
As you say, the FMVs come up with an error, but the missions seems to load fine.
For some reason today, I noticed my PPC setup is running twice as fast as it did before. I havent changed WinUAE or the setup in any way, so I dont know how this happened. Apart from the title menus, everything else seems ok.