Symptom
The CD-R/CD-RW drive is still operational with the Toast CD Reader extension disabled. If you also need to use the external drive as a CD-ROM reader, then you may need to turn on this extension and restart the computer.
The following alert box appears after opening the Apple DVD Player program:
"This Macintosh does not support the Apple DVD Player. Error number (301)."
Figure 1 Apple DVD Player alert box
Solution
1. Open the Extensions Manager control panel.
2. Turn off the Toast CD Reader extension by clicking its checkbox.
3. Restart the computer.
The CD-R/CD-RW drive is still operational with the Toast CD Reader extension disabled. If you also need to use the external drive as a CD-ROM reader, then you may need to turn on this extension and restart the computer.
For more information on error 301 with the Apple DVD Player program, please see article 25177: "iMac (Summer 2000): Error 301 When Opening Apple DVD Player"