Dynasty turns to Roster

I recently installed NOD32 (an anti-virus program) and then my computer decided to freeze up. After uninstalling it, I found that all of my Dynasty files had turned themselves into Roster files, and I can't load a single one of them (when I try it just brings me back to the main menu).

Can anybody suggest some advice? Thanks in advance!

Also, now I'm getting a codebase error when I try to start a new Dynasty game.....I looked up codebase errors on the nbalive wiki, but it concerned the saves files, not the dynasty itself.