I am working on a Macbook pro running Yosemite version 10.10.3. I subscribe to Creative Cloud - to run Lightroom CC and Photoshop CC - but up to now I have also had a previously installed version of Lightroom 5 running which I used. I have not previously used LR CC Today having been invited to download Lightroom CC 2015 I did so but find it will not load. All I get is a flash of the opening screen on the screen then nothing. I see from another thread that the advice was to uninstall the stand alone version of LR. Can anyone confirm if I have to do this in order to get LR 2015CC to load?
Open CC desktop application manager, log out of it then sign back in. Start Lightroom CC from the app manager.