-Verify that you have the Min/Suggested amount of Ram loaded in your system
(384 Min, 512 Suggested)

-Make sure you are using a supported version of the OS

-Make sure all drives are formatted Mac OS Extended (HFS+) with OS X's Disk Utility. Pro Tools can not use UFS or HFS volumes. If the drive was originally formatted in OS 9 or with any other application, backup the drive and reinitialize it with Disk Utility.

-If you are running a supported ATTO card make sure you install the ATTO Configuration Tool, this is a different application from Express. It can be found on the Pro Tools 6.x CD installer. This application installs necessary extensions for all supported ATTO cards.

-Confirm your System Preferences are set correctly:

Pro Tools requires a minimum monitor resolution of atleast 1024 X 768. This should be set prior to installing Pro Tools software.

In System Preferences > Classic > Start/Stop tab, Uncheck Start Classic when you log in.

In System Preferences > Energy Saver
Uncheck anything that allows the computer to go to sleep/shutdown/ power save etc.

In System Preferences > Date & Time
Verify that the date is correctly and that you are not using 24 hour time.

-Disable any Virus Protection Software and empty the Trash


Troubleshooting tips:


-Trash Pro Tools preferences Go to Users > "your user name" > Library > Preferences and trash DAE Prefs, DigiSetup.OSX and Pro Tools LE 6.0 prefs. Then restart the CPU.


-Quit Pro Tools and launch Apple's "Disk Utility" application. Select your boot volume, go to First Aid and select "Repair Disk Permisions." Apple recommends doing this any time an OS update or reinstall is done with OS X.


-Try creating a new user with admin priviledges and install Pro Tools to the new user account:

Uninstall Pro Tools by running the Pro Tools installer on your installation CD and Choose Custom > Uninstall.

Then go to System Preferences and create a new user (make sure to check the box to make the new user an Administrator).

From the Apple menu, log out and log back in under the new admin user you just created.

Reinstall Pro Tools to the new User Account and launch Pro Tools.


-Try removing any other USB devices that are plugged in. Then restart the CPU. (Mbox only)

-Check to see if you have another copy or another installation of OSX on your computer (in one case trashing another copy of OS X cleared up the 'Unexpectedly Quit' error messages).

-In System Preferences > Accounts, go to the Startup items page make sure that no "offending" software is being loaded when the system powers up (in one case Palm software was causing a problem).

-For all Mounted Hard drives trash Volume.ddb files: Located In MacHD (and other mounted HD's) > Digidesign Databases > trash volume.ddb

-Trash Databases Folder (If present):
Located in MacHD > Library > Application Support > Digidesign > trash databases folder


Note: To enable other users to help you, please include all of your system details when posting an issue to the DUC; Pro Tools hardware, Pro Tools software version, CPU, OS version, amount of RAM install, type of hard drives used, etc.