- Jan 13, 2006
I wanted to stick with Mountain Lion for speed, but was forced to upgrade to get the latest software updates. Why do these apps not work on Mountain Lion? The app icon typically shows a circle with a line through it (plus app store will only allow you to download an old version). How has it changed between 10.8 and 10.9? Maybe app nap? Compressed memory? Perhaps a developer could chime in.