– Mac OS X 10.6.6 is officially qualified with all versions of Pro Tools 8.0.4 and higher, including Pro Tools HD, LE, and M-Powered 8.0.4, Pro Tools HD 8.1, Pro Tools HD 8.5 (for HD|Native systems only), Pro Tools 9.0 and 9.0.1 and Pro Tools HD 9.0 and 9.0.1. As usual, use the Combo Update instead of built-in Software Update in Apple menu.