Load Deck Error: Invalid File Format

The error shows up whenever I try to load a deck for solo or online play. I've done some looking on the forums and the actual MW site and haven't turned up much. I'm running XP (not vista
) and I have re-installed several times to try and fix the error. I've tried taking out individual cards to see if there was a problem with any one specifically, which was the suggestion I got off the MW forums after a long search, but it didn't help at all.
I appreciate the help guys, especially huggybaby who directed me to here. Happy holidays

I appreciate the help guys, especially huggybaby who directed me to here. Happy holidays
