Did you happen to use a turn table setup with a non uniform white or black background. I have seen errors like this when people attempt to take pictures from a static position with a turling object, while keeping the background as is, meaning not setting it up, so that everything other than the turn table and object to scan is near pure white or near pure black. If you use a turn table, you must make the background as featureless as possible in order to trick RC into thinking that it was the camera that moved around the object.