iPhoto event/album thumbnails missing
Since updating
iPhoto '11 ver. 9.2.3 (629.52)
the event key photos are missing (Picture 1) and the thumbnails for the actual photos are missing as well (Picture 2). I have not reinstalled iPhoto nor have i taken any other actions to solve this issue. the image files are still present and within the iPhoto library (Picture 3) however this issue is purely cosmetic.
note: I have rudimentary technical literacy and i have tried troubleshooting through the support web-site/several forums.
please advise.
(Picture 1 above)
(Picture 2 above)
(Picture 3 Above)
iPhoto '11, Mac OS X (10.7.3)