I just installed a new NAZA module (see previous posts: 3rd one for this Phantom, first time installing it myself). I was exceedingly careful to match up cables as I moved them from one unit to the next. However, the motors now run opposite of what they should (yes, double-checked prop orientation), and I'm getting a CFG-ERR during calibration. An ideas why this would happen? how to fix it? Desperate and frustrated!