Yeah, the same thing happened to me. I think it was because I was hostile from the moment I came in, never spoke to anybody.
Well, actually it wasn't my fault. I didn't use the helmet that was on the duergar slaver that attacks you when you enter the board, because I already had a better helmet that made me immune to mind attacks. I think the game only checks to see if you have the duergar helmet. Anyway, the first mind flayer I saw called me stupid for not wearing the helmet and attacked.
I hate that I wasn't able to free the slaves, but I tried. Paladins don't negotiate with mind flayers anyway
