@Peter2
@ortech
Did you copy the dll as an user with admin-rigths?
Check this path: C:\Users\{username}\AppData\Local\VirtualStore\Program Files\Team MediaPortal\MediaPortal\plugins ... This (AppData\Local\VirtualStore\Program Files) is a "secret" place in Vista. Vista is cheating you when you copy/edit files without admin-rigths in the default program-folder! The "real" place is in the "VirtualStore". This may be the reason why you can't see der Plugin in MP-Config.
I'm running on XP Pro SP3. That's an idea to check though, I haven't yet looked in Documents & Settings\{username}\AppData ...
@SilentExcept: I'll post that log later today, I haven't had a chance to work on this in the last few days.