Problems with "Printers & Scanners" preference pane under Mavericks
Since installing OS X Mavericks I can no longer print to our WiFi enabled Epson WF-7515 network printer, and attempting to access the "Printers & Scanners" preference pane in System Preferences either produces a Preferences Error which reads "Could not load Printers & Scanners preference pane", or gives a corrupt version of the preference pane which then in turn leads to a different Preferences Error reading "There was an error in Printers & Scanners preference pane".
* Restarting in Safe Mode gives same results.