i have 4.6.9 running on windows xp and lately the previews when I double click to enlarge have been blank. It is not consistent, ie some will work fine and as i scroll thru the images the screen will come up blank. I I look at the image info it still comes up so apparently PM thinks the picture is showing but it is not. Any clue's? I shoot only in Raw and right now files from 1dIII were coming up fine fut only some files from a 7D. Has been happening for a while now. to be clearer it is full screen mode that has started acting oddly. It I choose to go to one photo and restore pane the photo shows. Also I just notice that if if I maximize the screen then even the image pops up. I can work around by always maximizing but this issue hasnt always been here for me
