The Toolbox may conflict with other printer drivers or software programs. One workaround is to uninstall the printer driver and use the Custom option to reinstall the printer driver without the Toolbox. The symptoms of the problem are any of the following:
Fatal Exception errors
All printer icons disappear from the Printers folder
Other printers do not respond when a print job is sent
note:These symptoms can also occur from problems unrelated to the Toolbox.