I am not a iOS expert.

  1. Checked all warning and correct some of them, for something not sure about I comment it with "by Tom"

  2. Tried to replace AFNetworking Lib, coz its out of date and failed, but I recommend that you should replace it with Xcode 5

  3. Didn't test it as long as much that error jump out, so don't know where the error is anyway.

Hope it helps.