Lr CC (latest flavour) on MacOS (also latest flavour) has issues with menu bars disappearing and it's gradually becoming a pain to use. I've been unable to find anyone who can help so I am looking to the nuclear option of reinstalling Lr to cure it of it's ailments.
Can Lr be installed over itself to do a 'repair'? I'm thinking along the lines of MS Windows repair installations... maybe??
If not then I'm (probably) looking at a deinstall and then install again into the same folder. How safe will my catalogues be?
The FAQs deal with either installing or deinstalling, but give me no confidence about maintaining integrity doing a reinstall.
(Yes, I'm nervous)
Your data will not be touched. You can safely remove and reinstall.
Here's how, just change the version you need as you like since the sample is with 6.1.1: https://www.lightroomqueen.com/roll-back-update-previous/