Auto-Tune® Pro (v 9.x.x), and Auto-Tune® 8.1.x, cannot open instances of Auto-Tune 8.0.x, Auto-Tune® 7, or earlier versions.

However, Auto-Tune 8.0.x can open instances of Auto-Tune 7.

If you have old projects using instances of Auto-Tune 7 or Auto-Tune 8.0 that you wish to open, we recommend that you install Auto-Tune 8.0.x from our Discontinued Software page.  You can then use version 8.0.x to open your old projects and the latest version of Auto-Tune Pro for new work going forward.