vision quest

Only quests left to complete is the New Tycrhris quest, Main story (Log says I'm as far as I can go for now) and Nina's 3rd vision quest. Been fine up until the doppleganger fight, in which it throws a fit and gives me this code. ( I have gotten both chests and the urn, can give details on...

Once I initiate combat with the doppelganger the game either critical errors immediately or critical errors after I do any interaction including attack, powers, tease, sense etc. I have tried the steam version and browser, and both are getting the same error. I tried unequipping all my powers...