The reason, explained in full detail by Scott Helme, is that a widely used root security certificate, that for IdenTrust DST Root CA X3, will expire in just over a week, on 30. I guess I have come up with an answer for my problem. If you’re still running El Capitan, or any version of Mac OS X prior to 10.12.1, then you’re about to run into problems with some popular security certificates. The result still registered as FAIR but now IDCS6 works as it did before with no noticeable delays. So I removed any low priority and overly greedy login items from my system and a few hardly-used 3rd party System Preference Panes. I opened Activity Monitor and TinkerToolSystem 5 and ran a few tests looking at memory usage.

Having done some more research this afternoon on memory management and Sierra I have discovered that woodmeister50 had given me a great lead. I can now work with it with a modicum of patience. It has improved but not totally fixed the problem. I have completed a, b and c and removed a few suggested apps that eat memory and cpu time.

Some here have claimed to be able to use CS6 in 10.11 without incident, others haven't.Ī) launch the InDesign application from the applications folder ( this will not work on a shortcut or the dock icon) while holding down SHIFT+CTRL+OPT+CMDī) try using the application from a newly created account that has administrative rightsĬ) reinstall the CS6 package and if the application asks for JAVA use this version:ĭ) roll back to an instance of your computer where the OS and the Application were stable if you have a time machine backup of that point in time. However, I noted this info on Apple Community support by Jimm圜MPIT's Profile | Communities :ĬS6 and 10.11 have not been claimed by Adobe to be compatible at this time. You are correct about it not being supported from El Capitan onwards. I have got InDesign CS6 to work with macOS Sierra but have to allow time for the panels to work.

Os x yosemite mac os x 10.12