it's possible, usually 'invalid' files is from a change that was made, where information is not the same as it was before and the game can't use it. I'd suggest trying one of the 3rd party editors to check out your invalid file..... there is a bunch here:
http://www.tresclub.com/downloads/downloads.htm
I am just going to guess the move is what did it, I hope one of those editors helps you find the error.
Obveously start with the team you moved and hope to see something that doesnt look right.