A minor QuickTime version update halfway into Tiger's lifespan completely broke RollerCoaster Tycoon 3 for a while. It wasn't an OS update, granted, but still irksome. Also, Mountain Lion throws a hissy fit if you try to run a Flash-based app with Gatekeeper enabled (even if you do the right-click->open workaround).
> My 2009 Intel desktop Mac can run all apps ever released for OS X, even the ones compiled for PowerPC.
A minor QuickTime version update halfway into Tiger's lifespan completely broke RollerCoaster Tycoon 3 for a while. It wasn't an OS update, granted, but still irksome. Also, Mountain Lion throws a hissy fit if you try to run a Flash-based app with Gatekeeper enabled (even if you do the right-click->open workaround).
> My 2009 Intel desktop Mac can run all apps ever released for OS X, even the ones compiled for PowerPC.
Are you still running Snow Leopard, by any chance? http://appleinsider.com/articles/11/02/26/mac_os_x_lion_drop...