Hello Dave, Jerry & Kirk
I was able to reproduce the problem 1:1 because I had a similar problem (see my topic 'Problem with the Structured Keywords Panel'). Dave, you mentioned that you add keywords, that made me think. The problem is caused by the 'Keywords Panel' and the 'Structured Keywords Panel'! I can reproduce the error with both panels.
Try it: Close PMP completely and then reopen the program. Open an image in the Preview window and delete the photo. It will work without problems and the next photo in the series will appear in the preview window, right? So, and now open either the 'Keywords Panel' or the 'Structured Keywords Panel'. You can close the panel immediately without attaching a keyword. And now try to delete a photo in the preview window and the error will happen again!
You can also try the problem described in my topic: instead of deleting an image, you simply click on anything outside of PMP. And then back on the preview window. Disappears into the background, right? If you close PMP again and then reopen the problem is gone. Until you use 'Keywords Panel' or the 'Structured Keywords Panel' again.
Erich