Hey guys - got it all figured out. I know many are having difficulties getting the cracks to work for the new JKII, particullarly in MP. Here's a possible solution that just worked for me:
If you have a burner handy, burn a copy of the game (there is no overwrite protection on it, just make sure the data is in the same locations - ie there is NO sub folder that the whole cd is in) When you go to copy the CD be ABSOLUTELY SURE to name the cd JediOutcast. ALL mp and sp probs will go right away (unless you installed one of the cracks, then uninstall the game and do a freash install - it keeps all saves and configs).
I suppose if you had no burner and got really desperate then you could create a Virtual Drive instead (theres a program for it), but the key to the whole solution is to install from the drive the check will be made on and title it JediKnight.
Hope that helps - any questions feel free to ask. Later.
Raz