I had this happen last week, and even going back to stock rom and radio didn't help *at the time*.
Sprint Store was a royal PITA about it, and just removed the GeoTerrestrial App. I was then able to reproduce the problem with SprintNav and the QuickGPS program. They finally relented and ordered me a replacement (refurb
).
While waiting for the refurb to show up ( from Sunday last to Wednesday last), the conflict or whatever fixed itself on the stock radio, and I was able to use QuickGPS and
GeoTerrestrial again.
I still took the refurb and sent the other one back.
So, I'm not sure what the hades was going on there, but you are definitely *not* alone.