I stumbled upon what I believe to be a fix for Adobe Creative Cloud not working on Mac OS X Yosemite. It looks like we need to update Java to 7 60. You cannot do a fresh install of Java 7 version 60, you must update from Settings -> Java -> Update. From there, I restarted and noticed Creative Cloud was now working. I've tried this solution on two machines with Yosemite, upgrade and fresh install. @adobe ; @creativecloud ; Creative Cloud Download & Install
Good luck all!
Justin