I have the same camera. I don't think you will get alot of pictures past 20 yards. You can adjust the jumper to a higher sensativity as the days get warmer. That may help. As far as the camera freaking out with a bunch of pictures at one time. I would suggest new batteries.

Try starting over from scratch with the new batteries. Program it like you just got it. If that doesn't work I suggest calling non-typical.