Game not loading any more

After my game crashed (Saka campaign, about round 60 or so) the game won't load properly any more. When it gets to the main screen, it just keeps loading and the menu options don't appear. Any way to fix this, or do I have to reinstall?

Update: I saved my save-file, uninstalled EB II and M2:TW, moved steam, and reinstalled EB II and M2:TW and the game is running a lot more smoothly. There's still a crash here or there but I can get into the game now and it's not nearly as much as it was before the game broke.

ouch