Leopard compatibility for Pro Tools LE, Pro Tools M-Powered, other Pro Tools|HD systems, older Intel-based Mac Pro computers, Avid Mojo SDI, and expansion chassis is expected in subsequent Pro Tools software updates. Digidesign say that users should wait until official announcements are made before upgrading their system to Mac OS X 10.5.
Some currently shipping plug-ins and virtual instruments are not compatible with Pro Tools HD 7.4.1 running on Mac OS X 10.5.1, and some require that you update your plug-ins if an update is available. Digidesign say that, before you install the Pro Tools HD 7.4.1 update, be sure to review the plug-in compatibility and update information on the website.
Apple have this week upgraded Mac OS X to version 10.5.2, an update that addresses some stability, compatibility, and security issues. However, the new Pro Tools HD 7.4.1 software is proven to work with Mac OS X 10.5.1 only, and Digidesign recommend that Pro Tools users do not update to OS X 10.5.2 until they have made an official announcement about compatibility.
Pricing and Availability:
Registered Mac Pro-based Pro Tools HD 7.4 users may download the free Pro Tools HD 7.4.1 software update from the Digidesign website.