I tested the public betas of OS X 10.10 (Yosemite) and they seemed okay, so I installed the real thing at the end of last week. So far I haven’t had any problems with applications. As usual, my local web server set-up got stomped flat, but I’m used to that by now. That’s why I make backups.
I’ll install OS X 10.10 (Yosemite) when it’s released, but it would be handy to know what works and doesn’t beforehand. To test it out safely I downloaded the OS X 10.10 beta and installed it on an external drive. I allowed the installation process to migrate applications, settings and documents from the main drive, so I have the same set-up as before, but an upgraded OS. I don’t have time to test everything, but here’s what I found so far. (Please note this is an idiosyncratic list, as it reflects my illustration, web development and 3D work.)
Issues when installing the new Adobe CS5 suite on Mac OS X, plus a manual solution of sorts.