When you rebuild the iphoto library, one of the options is "rebuild the iPhoto Library Database from automatic backup" is there a way to force this backup? I've been trying to copy over a lot of images from one library to another using iPhoto library manager and my iPhoto will crash in the middle of it. And then half the time i'll have to rebuild the library from the backup, so i've never been able to finish copying over. is there a way to force iPhoto to make a new backup so that I can make incremental restores so i can transfer all my photos over? or can I use time machine for this? my understanding is that it would just recopy back my entire 500 GB library, wouldn't it? which would take more time than i would want it to.