Do you have the full error message (there a full error message)?
The problem with assertion is that, unless there's a documented case of assertions failing somewhere on the forum at that specific point, it could refer to anything in-game.
If there is no detailed message you could try teleporting somewhere, sleeping for a bit in a bed, or even selling some stuff or dropping ti on the ground. There's a chance that none of these will work, since the problem could be just about anything.
Geändert von zels (02.01.2012 um 11:30 Uhr)