Hello. All my photos in a particular event appear as blank white with a yellow frame around them when I am in the thumbnail page when in iPhoto. However the photo comes up when I click on the photo, so I know the photo is still in my computer. How do I get the photos back into the thumbnail page? This happened when I was adding titles to photos. I added a title to a photo, and then wanted to move this title to another photo in the same event. I highlighted the title, clicked on Edit Cut, and all the photos disappeared, but not the titles. Hope someone can help as I have deleted the photos from my camera's memory card and hence I cannot reload them. Thank you.