Its a weiDU mod, so just run the setup program again and choose uninstall. Unless you ran another version than the one from
www.weidu.org , in which case your going to have to re-install from scratch.
Trouble is, I cant see any reason why weiDU would have corrupted your saves like this, its a pretty stable technology by now and I havent run into any major problems other than user error, and nothing like this, ever.
If your fairly close to the start, try starting a new game and see if it works, if it has the same problems the mod is to blame, if it works then your saves were damaged somehow.
The program dalekeeper II will allow you to alter your characters inventories, the crash is probably being caused by a invalid object, so if you use that program to remove everything you shouldn't have you should be able to continue your saves.
Oh, and welcome to the forums.