[bug] Ismey becomes an enemy (?)

[LordElmdor]

So .. I'm having problems in the quest " Whispers in the Dark ." (White March II). My Journal asks me to talk to Ismey after defeating Giant Spore . But to return to the mines and earn my reward , all the miners strike me as if they were my enemies. Ismey is among them ...  

[B_Dubb_B]

I'm having the same issue and I can't find a way out of it other than cheating (but I don't want to lose achievements). I noticed that this happened after Cillan attacked me with golems.