I have an iLok USB key that came with my MIX pack or Digidesign 001 Factory plug-ins authorizations, but it is not being recognized when the plug-ins load.
Download the iLok files from the Pace Driver Download page:
paceap.com InterLok Drivers - for Windows* InterLok Extensions - for MacRun the installer application and reboot. If you are on a Mac, the installed extensions must be active in your extensions set. When your plug-ins load, the authorization process will ask you to insert the iLok if it is not already present.