OK again, as I said - I have been using WSE for quite a few months and suddenly it started showing this message. Nothing was changed in the folder structure or anything, reinstall didn't help. I am not an idiot, yes I am using WSE2, or trying to

edit: removing WSE2 documents isn't working either
This wasn't happening until like last two versions I think, as I said, haven't played for like a week and tried to run WSE2 yesterday and it showed this.