When you get the message that says "cannot playonline with changed blah blah blah" i think it should say what it is that's hindering you from playing.
In a mod im useing, one of the clips was too big, but i couldnt find out waht was wrong, so i ended up completely f***ing up half the images b4 i found it. if the game actually told you what was wrong, this sort of thing wouldnt happen.
same for animations, seeneree and such.

Yes, I hate when that happens to me. Pershaps Michal could add it to the next soldat version.