I did the quest like you were supposed to. I then went into the puzzle room before i retrieved the Crystal from the dead Falmer. I dont know if that triggered the glitch where i cant move the beams of light but because i didnt know frostbite and i wasnt observant enough to know the book for it was in the puzzle room, i left again the go buy and get the spell. So any ideas on how to fix this and dont say go to an earlier save because i dont have one for i had decided to skip the quest and then return later. Please help