Hi, I have a late 2011 13" MBPro running LION. I Just bought 16GB RAM as I was going to upgrade to Yosemite and the extra RAM was recommended. But have been thinking that it may be better to wait until El Capitan ios because of problems with Adobe CC on Yosemite. Any photographers artists out there any thoughts on this or experience you have been having with Yosemite and Adobe CC. I use Photoshop and Lightroom with lots of plug ins from Topaz and such like.