I have the latest LR update and it is horrible----program locks up, shuts down unexpectedly and I have to constantly restart and then lose some of my work. Also have installed the newest OS X El Capitan version for the Mac, which I read somewhere is part of the problem. Any suggestions?
I'm not sure which "latest" you have -- do Help > System Info. If you have CC 2015.2 / 6.2 or CC 2015.2.1 / 6.2.1, many, many people have rolled back to CC 2015.1.1 / 6.1.1, the last stable release: How do I roll back to Lightroom 2015.1.1 or Lightroom 6.1.1? CC 2015.2 / 6.2 and 2015.2.1 / 6.2.1 have many, many problems, for which Adobe has apologized: http://blogs.adobe.com/lightroomjournal/2015/10/lightroom-6-2-release-update-and-apology.h tml. Wait until 2015.3 is released, and let others do the beta testing.