Currently Being ModeratedDec 10, 2012 4:57 AM (in response to mackatee13)
I had the same problem with export. I removed Flip4Mac and Perian codecs (found uninstallers through spotlight), restarted iPhoto and it helped. I re-install Perian again then and it works fine.
Currently Being ModeratedJan 11, 2013 6:40 AM (in response to mackatee13)
uninstalled flip4mac using appcleaner iphoto exported after that.
Currently Being ModeratedJan 11, 2013 2:28 PM (in response to jcrudio)
Check for the latest version of Flip4Mac as I have it installed and can export slideshows.