This means that when CDT asks the device if it is ready, it isn't getting a response in a reasonable amount of time. This message usually indicates a hardware problem with the drive, old firmware, or a SCSI communication problem.
Sometimes another piece of software- notably internet/communications software- will send a query to the CD player. If there is no CD in the player, you may see this message. One workaround for this is to leave CDT and the CD-ROM drive turned off until you are ready to use them. With 2.0.x versions, you can put CDT to sleep when you launch an application that causes this problem. In Drive Setup, choose the Sleep icon, and select an application.
Machines Affected: All