I was trying to finish Revealing the Unseen and the part where a magic barricade appeared in hall of element.Savos and Mirabelle are in front of the barricade..they standing like nothing and when i talked to savos,he wants me to help them to destroy the barricade..then bugs happens,Savos and Mirabelle are supposed to destroy the barriers..but for me,they just walked away like nothing..Mirabelle go outside the hall of element,and Savos walked to the other rooms...Is it possible to fix this or i have to load an old save game?