Hot answers tagged photos
I can't reproduce your problem in Mavericks or Mountain Lion; if I add an image to the watched directory and start the screensaver, the new image appears; if I delete the image and restart the screensaver it disappears. So a logout/login cycle and/or restarting the Mac seems called for. But if those fail, I saw a similar issue some years ago that resulted ...
The version of your operating system is not important here. You need to be careful of the version of your iPhoto. Old iPhoto library can be updated by newer iPhotos. But newer iPhoto library cannot be opened by old iPhotos. So if your target mac has an up-to-date iPhoto, you can copy it directly.
Prior to a recent change, Apple's solution for this would be to ensure that iPhoto was running and you have configured iCloud to automatically import all photos into your library. Now that there is no limit to the number of photos, you just need to remain under the current upload limits to avoid having photos that are only on your device and not backed up ...
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