I tried to take a couple pictures with my Montana last week. Every time it locked up, acted like it was taking a picture. Then nothing happened except you could get out of the camera mode no matter what. Had to hold the power button till it shut off. Repowered ok, and tried again to take a picture. Same thing happened, sure glad I brought another camera along.
Will have to try and see if there is a setting that is off or what. It worked before just fine.