I have used Elements 5.0 and Photoshop CS3 with no problems until today. Now when I am in Elements and click on a thumbnail to edit in CS3 the thumbnail becomes an hourglass with the red banner. The photo appears in CS3, I work on it and save it. When I return to Elements the thumbnail is an hourglass which will not disappear. If I click on the hourglass the photo appears but them goes back to being an hourglass. How do I get my thumbnail back?