What version of mac os x are you using now?
Mac os x 10.10 and 10.11 are still get security updates from apple, so if have one of those, i don't know that upgrading is a must for security reasons.
Anyway, both photoshop cs6, bridge cs6 and Lightroom 6 seem to work okay on this macOS Sierra 10.12.6 install.
Hi Jeff, Thanks for responding. I am running OS X 10.9.5 which Apple told me is from 2013. My problem is that every 8 or 9 months my entire Lightroom application disappears from my computer. This has happened several times both on my laptop and desktop. I've been using Lightroom since it was invented and I am no novice to computers so I know I had nothing to do with it. I turn off my computer at night and the next morning it is gone and I have to reinstall it completely. It's a pain to reinstall but one day it's going to happen to me on a job where I don't have wifi and that will be unacceptable. I called Adobe about this and they swear I have to take care of it on the Apple side. Adobe says Apple can run logs and see where the problem might be happening. But when I call Apple they say they can't help me unless I'm running the most current operating system.
Other stupid things like my phone not syncing with the old OS happen too, but I don't really care about that so much. I intend to place another post on this forum about my LR disappearing, because I can't believe I'm the only one this happens to.
But you say there are no problems with Mac Sierra? then I guess I should try it?
That sure is strange about Lighroom disappearing.
I've heard of that happening on windows with overzealous virus scanners, but never on a mac.
You might as well try Sierra, since 10.9 is getting dated and actually the lightroom system
requirements list 10.10 as minimum for versions newer than 6.6.1, so maybe that has something to
do with lr disappearing.