Just installed LRcc last week, worked perfect, went on vacation, came back now it won't load when I click on it, just an endless pie rotation, I've shut down and started up several times but it won't load. OMG, so frustrating. Help.
Let's reset your preferences file and see if that cures it. Hold down [Alt/Opt]+[Shift] and launch Lightroom. You should see a dialog that mentions overwriting your preferences. Do this. If you do not get a dialog, then we will have to investigate further.