I had a problem on an outing yesterday that was not pleasant at all. I was hunting in a small park with a little creek running through it and was near a culvert next to a street when all of a sudden the pin pointer wouldn't pair with the remote. It would work manually but I tried everything to pair it and it would not. It had been working perfectly and I have used it almost daily without any symptoms at all. So I left and went home. None of my devices had low battery indication either. I proceeded to try it off and on during the evening and it would pair and then immediately loose the connection. It appeared confused. Frustrated I just left it and decided to wait till this morning and fully charge everything and reload Version 4 to everything. It worked and is working just fine now. After a lot of trial and error, reading over the instructions and the Ver. 4 user manual, I have come to the conclusion I must have encountered an interfering signal from a passer byer that corrupted the signal of the remote.and the pin pointer and could not regain programming between the two. Go figure. Of course I was thinking all sorts of things and knew it had not been dropped or abused. You know a very sinking feeling when the most favorite toy went belly up. All's well that ends well.