When I set up a scene, I normally create a camera, set it  to the position I want,  then lock the translation and rotation controls, and use the perspective view to change the figures / props in  the scene. This worked Ok until I bought a new 64 bit computer and installed the 64 bit version of DAZ Pro 4.5  Now if I lock the camera controls and save the file, close DAZ , re-open DAZ and reload the file ( simulating a new work session) the camera has moved to a different position. Perversely, if I don’t lock the camera controls and carry out the same procedure, the camera remains in its set position. Does anyone know what’s going on? Because of the way I work, I would like to be able to lock the camera.