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-Premiere Pro Video Editing Information FAQ http://forums.adobe.com/message/4200840
Also, if you have it, Yosemite sometimes has problems, often related to "default" permissions needing to be changed
-one person's solution https://forums.adobe.com/thread/1689788
-http://blogs.adobe.com/creativecloud/creative-cloud-and-yosemite/
-https://helpx.adobe.com/x-productkb/global/mac-os-yosemite-compatability.html