For some reason, while doing the Vampirism cure quest and getting to the part where you hand voer the cure to Hassildor, I can't talk to him nor Mellisande anymore. Which jeopards a Mage Guild quest and the main one (Getting aid for Bruma, from Jauffre) And im wondering if there's any way to resolve this issue, whatever the option may be. (restarting the quest if possible/how, completing the quest witht he console command or ect..)