If you have an Emagic A26 or Emagic A62m audio interface and install the driver for either on a Mac OS X 10.4 computer, you will get this alert dialog after restarting your computer:
The Startup Items folder ("/Library/StartupItems/") does not have the proper security settings.
To resolve the issue, simply click the Fix button in the dialog. You will then be asked to restart the computer. The audio interface will function properly after restarting.