So finally after getting my OSX to build the next branch as listed in the title.
Software works great by the way.
Now I understand this is a beta build but it did do the same thing in the 15.09 release
I set out to see if my drone would fly in INS13 mode with LibrePilot-15.09+r498-g9e6989d
Short answer is NO! every-time I try to take off in INS13 the 250 lifts up and rolls over into the grass.
Also to make matters worse my little drone nearly went through my glass window of my house when I accidentally flicked the position hold button I had setup up on my controller.
I go back to basic and it fly's in manual no problems, hovers around nicely
I found after updating to the beta, my internal board mag started showing better health, my NazaMag is not so good so i disabled it and just using the on-board one.
I have included some picture, after the crash I re-calibrated all the sensors on my drone and left it on my level board outside, the included pics of the GSC are while it is in this position.
Hopefully someone has has this issue and is able to chime in with some wisdom.
Thanks guys