When Launching Pro Tools 7.3 this error was seen, Digidesign hardware is in use by another application. (-1133).
In one case Pro Tools M-Powered 7.1 was co-installed with Pro Tools LE 7.3. Performing a clean uninstall of Pro Tools M-Powered 7.1 and Pro Tools LE 7.3 and then installing Pro Tools LE 7.3 by itself resolved the error.
To Uninstall Pro Tools LE or M-powered LE 7.1:
1) Insert the Pro Tools disc and run the Pro Tools installer
2) Proceed through installation until you see "Custom Install"
3) Click on Custom Install and choose Uninstall
4) Hit the Uninstall button and choose Clean Uninstall to complete the procedure.
To Uninstall Pro Tools LE or Mpowered 7.3:
1) Open the application folder > Digidesign > Pro Tools > Utilities
2) Click on the uninstaller icon.
3) Select uninstall and then select the type: clean uninstall
It is not supported to run different versions of Pro Tools LE and Pro Tools M-powered on the same system. The version numbers have to match exactly.
