» Tue May 29, 2012 11:52 pm
Likely Navmesh issue. Don't delete the save, but try making a new character without any mods plugged in (you only spend a few mins since it is start of game), save before entering the keep, and see if it recurs when you enter. If it does still go buggy with the new character and no mods, you might want to error-check your install.
If that does clear the error, however, reinstate the mods you have, load from the outside save, and see if it goes buggy again when you enter. If it does go screwy again, then remove all but one mod, and re-enter. Rinse and repeat until you see which single mods cause chaos and which don't. Then report back here with the intel on which were the troublemakers, soldier! Inquiring mod-users want to know!
Good luck!