I'm running 4.6.6 on a new Win 7 Lenovo laptop. If I arrow from image to image - no problem. If I color code an image - (I have PM set to advance to next image) I get a blank preview screen instead of the next image. PM does advance to the next image but does not preview it. I need to arrow back and forward again to see that next image.
Edit - I am working on a network drive over a wireless connection - SLOW to advance when changing any image.