I, also, have this problem. Mac OS 10.10.3. Have had Lightroom/Photoshop for Photographers membership for a long time. Photoshop CC doesn't appear to have the problem. Both Lightroom and Photoshop were updated yesterday. Lightroom 5 still works properly. Are there any solutions to this?
Thanks. The sign out and then back in worked for me. I can now bring up Photoshop CC, Photoshop (2014), Lightroom 5, and Lightroom CC (2015) without any problems.
I noticed that Lightroom CC updated the catalog. I assume that LR 5 and CC keep separate catalogs and so if I accidentally bring up LR 5, I won't have problems; I just won't be able to get to any changes I've made with CC.
Thanks again for getting LR CC running.
Worked for me as well on both computers. Perhaps this should be built into the update somehow, at least the instructions. Thanks.