Running the latest OS X 10.10.2, none of my CC updates will complete, not even the CS6 updates. They will download/install to varying amounts, usually 50% completion, and then freeze. They never error out, but never finish, I've left one or two running for days and they never complete. After working with Adobe Support, we've had some luck uninstalling the program, and then installing the program and updates from standalone installers in the root user account.
Now, however, that will not even work for some. I would really like to know why they never complete, why they never error out, and how to clear the caches to make these start working again. Any advice would be welcome, Adobe Support has been virtually no help.
Yosemite sometimes has problems, often related to "default" permissions needing to be changed
-one person's solution https://forums.adobe.com/thread/1689788