I just bought a new MacBook Pro and just "migrated" all my data and applications from my MacBook Air. On my Air I had downloaded the Creative Cloud and after the data was transferred to my Pro, I then signed out of my Adobe account on my Air. The Adobe applications that I previously downloaded seem to be running fine, but I cannot download the actual creative cloud. I get a "Download Error" in the window. I am downloading it from Safari and cannot seem to figure out why the application manager will not download.
Mac migration does not always work with Cloud programs
Uninstall... run the Cleaner... Restart your computer... Reinstall
-http://helpx.adobe.com/creative-cloud/help/install-apps.html (and uninstall)
-using the cleaner after uninstalling and before reinstalling will usually help