In iPhoto, when you double click on a video clip it is supposed to open QuickTime and then play the video. However, this does not work on two different Macs with pretty different setups. How do I fix this? Mac 1: Mac OS X 10.5.6 iPhoto 7.1.2 Mac 2: Mac OS X 10.6.3 iPhoto 7.1.5 Workarounds that work: Mac 2: Right click the video clip, select "Show file in Finder", and then double-click the video clip in the Finder. This DOES open QuickTime, and it plays just fine. Mac 1: The "Show file in Finder" option is grayed out for some obnoxious reason. However, the entire iPhoto Event can be drag-and-dropped onto the QuickTime icon, and this opens all the files in the event with QuickTime. These two workarounds suck pretty bad, especially the second one. What is causing this problem? How do I fix it? I tried MRoogle. Thanks.