Mac OS 8.6: "Desktop Printer Extension is incompatible" Message

The Desktop Printer Extension is no longer needed for desktop printing. In Mac OS 8.6, the Desktop Printer Extension is incorporated into the OS and does not need a separate extension. The Mac OS Installer should remove this extension, but if it remains installed, or is installed later, it may cause your computer to stop responding when starting up.

To remove the extension:

1. Start up your Macintosh with extension off (hold down the Shift key while starting up)

2. Once the desktop appears, open the System Folder

3. Find the Desktop Printing extension file within the Extensions folder and remove the file

4. Restart your Macintosh

For additional information on this topic, refer to article 30791: "Mac OS 8.5: Desktop Printer Extension File Is Incompatible".