Upgraded from Mavericks to Yosemite two days ago and now find IPhoto very problematic. !.) IPhoto does NOT recognize memory media plugged into the USB port on the back of my Mac Mini. (Flash drive or USB hard drive.) Always worked in prior versions. 2.) Exports can not be done with reduced size. (At least I have not found it.) This morning, IPhoto will not load and run and it is "x'd" out in applications. Some information on my setup: Yosemite 10.10.4 IPhoto 9.5.1 (About 7000 images) Hardware in image below. I have two Mac Mini machines, and a ten year old MacBook. All upgrades in the past have been seamless, but this one to Yosemite doesn't look like it had any user testing. Any advice on how to at least get those exports to work? Going to do a fresh install right now to try to get IPhoto to load.