: Mountain Lion (10.8.5) is the latest officially qualified OS for Pro Tools 10.3.10.
: Highly recommended for Pro Tools|HDX, HD Native, and HD Accel systems on supported OS versions. Avid Pro Audio Community Installation Recommendation Avid recommends performing a Clean Uninstall avid pro tools hd 10310 r3 hotfix only for mac top
. While 10.3.10 is available for both Mac and Windows, certain hotfix-style components, such as the Avid Virtual Instruments installer : Mountain Lion (10