10.12.5
10.8.5
Do not upgrade your computer to an OS that is newer than your Avid Media Composer is qualified for.
Lower versions of OS X and Avid Media Composer still work great (and often better). Click on the links below.
10.10.5
17.7
10.11.6
10.9.5
Application Manager
10.7.5
10.6.x
10.12.5
10 Pro