No home position in openhd

I am on my 2nd OpenHD build, 1st one works great so I thought i’d build a bigger copter, so far everything checks out, video, telemerty and iNav seems ok. I get a full 3D lock on GPS but I simply cant arm the quad. All I get on the OpehHD status is “no home position in openhd”. I have even configured a mode to set the home position, alas still the same.

Has anyone experienced this before?