Having a strange bug. If I cast my main characters innate cure light wound ability outside of the Watcher's Keep dungeon (I haven't actually entered it yet) I get a message saying all levels have been sealed and I am granted 80000 EXP. Afterwards I can't enter the dungeon at all.
Not using any mods. Though I am using an illegal character I imported from BG1:EE. Human multi-class FIGHTER/THIEF.