^ it is buggy as hell.
I'm up to a part where i read Valerica's Journal and then Sarena is suppose to tell me about the ingredients. But the talk with Sarena doesn't trigger so i can't go further with the quest as i need to find the ingredients in the room which i have and then use it to open up the portal. Nothing happens Sarena just has the same dialog. tried an old save, redo it again, tried waiting 24hrs. Nothing. Can't continue.
Oh and forgot to mention, Glitches - ive fallen through the floor twice once running up the stairs in a dungeon, i ran right through the stairs instead and another i was fighting a gargoyle and fell through the floor! Had to TCL to get back up and continue.