To kick a dead horse...yeah, its just over two years since the last post on this, I just started playing Skyrim on PC in Mid January 15. Have the unofficial patches and a few mods, Miraak froze after the first respawn, so, after getting to that point 4 or 5 times, I went ahead, dropped from legendary mod to novice, killed the dragons, and killed Miraak, everything proceeded as it should. Nothing else seemed to work.