First time happening to me on Closing the Rift mission the bloodstone HP is -1 and i cannot destroy it. I'm playing on PC steam latest version, verified files integrity, reloaded the game several times, loaded saves from before entering the ruins, tried choosing different route every time i reloaded save file. I have the "six man party" mod on but didn't had any problems with it thus far. Done most of the missions in Luculla Forest. The only missions i have left in Luculla Forest are initiation and infiltration mission and the Closing the rift mission.
Any chance it's fixable without starting the whole game over?