Click on Compatibility & Upgrades at the top of the forum, or this link:
www.digidesign.com/ptmpgrid
Pro Tools 7.4 was the first version compatible with Vista. 7.4 was a free update if you purchased M-Powered after October 1, 2007. Since you purchased your M-Powered software in March 2007, you received a free upgrade to version 7.3, but 7.4 would be a paid upgrade in your case.
So for Vista compatibility, you would need to purchase the current upgrade, Pro Tools M-Powered 8:
Quote:
Upgrades- The current Pro Tools M-Powered upgrade is Pro Tools M-Powered 8.0 for Mac OS X 10.5 (Leopard), Windows Vista 32-bit, and Windows XP, available from the online DigiStore. For more information, see the following:
Pro Tools 8
- All paid upgrades are full installers that do not require previous installation of Pro Tools software. To upgrade from a previous version of Pro Tools M-Powered, it is only necessary to purchase the most recent upgrade.
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