I too have been having problems getting Frostfall and Requiem to work together in their current forms. The only patch I've found that *might* work is for the Legendary release of Skyrim, which I don't own. One issue I've been having which, which I haven't seen commented on, is that when I start a new game, during the pre-dragon attack intro, the game behaves as if I am trying to place a fire pit. So, right now it's one or the other, but not both.