This does still happen occasionally with me even with all the patches using the Main Camera. I just do an Undo right away, but there are a few other things you can do to lock your camera in. Use the Camera Dots to save the camera. Since these arn't saved with the Poser file, they arn't that usefull. The best way is to save the Camera in the Camera Library so it is always available and can be recalled if it gets "lost".