System Administration Guide
Chapter 4, Managing printers and print jobs

Missing or corrupted database files

Missing or corrupted database files

If certain files used by the Printer Manager have been removed or corrupted, the manager may fail to function:

/etc/printcap
If this file is missing, the Printer Manager will become stuck during initialization and will not start up. The progress indicator will work continuously until the screen is closed. If the file is corrupted, an error message will be displayed. You should restore the file from backups.

/usr/spool/lp/admins/lp/printers/printername/configuration
If the configuration file is missing for a given printer, the Printer Manager will abort at startup with an error trace saved to /tmp/tclerror.number.log. Check the files in the above directory to see if any are missing. If there are, restore them from backups.