Print does not work

Question

Print function does not work. This may have co-insided with install of v 30 - i'm not sure. I can print from other browsers. I have reset FF to its default settings. I have reset print_printer in about:config.
My prefs.js file does not have any lines starting with "print_" - most lines start with "user_pref".
When I clik on print I get a 2 tone sound like "ding-dong" and I do not get the printer dialog box.
I can print in all other programs. I don't know what to try next - uninstall and re-install?
Application Basics
Name: Firefox
Version: 30.0
User Agent: Mozilla/5.0 (Windows NT 5.1; rv:30.0) Gecko/20100101 Firefox/30.0
Crash Reports for the Last 3 Days
All Crash Reports
Extensions
Name: Adblock Plus
Version: 2.6.3
Enabled: true
ID: {d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
Name: Adblock Plus Pop-up Addon
Version: 0.9.2
Enabled: true
ID: [email protected]
Name: avast! Online Security
Version: 9.0.2018.95
Enabled: true
ID: [email protected]
Name: Classic Theme Restorer
Version: 1.2.1
Enabled: true
ID: ClassicThemeRestorer@ArisT2Noia4dev
Name: DuckDuckGo Plus
Version: 0.3.16
Enabled: true
ID: jid1-ZAdIEUB7XOzOJw@jetpack
Name: LastPass
Version: 3.1.40
Enabled: true
ID: [email protected]
Name: Tabs on Bottom
Version: 0.5
Enabled: true
ID: [email protected]
Name: The Addon Bar (restored)
Version: 3.2
Enabled: true
ID: the-addon-bar@GeekInTraining-GiT
Name: McAfee Security Scan Plus
Version: 1.0
Enabled: false
ID: {e4f94d1e-2f53-401e-8885-681602c0ddd8}
Name: Microsoft .NET Framework Assistant
Version: 0.0.0
Enabled: false
ID: {20a82645-c095-46ed-80e3-08825760534b}
Name: Skype Click to Call
Version: 6.12.0.13601
Enabled: false
ID: {82AF8DCA-6DE9-405D-BD5E-43525BDAD38A}
Important Modified Preferences
browser.cache.disk.capacity: 358400
browser.cache.disk.smart_size_cached_value: 358400
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.places.smartBookmarksVersion: 7
browser.search.useDBForOrder: true
browser.sessionstore.upgradeBackup.latestBuildID: 20140605174243
browser.startup.homepage_override.buildID: 20140605174243
browser.startup.homepage_override.mstone: 30.0
browser.tabs.loadInBackground: false
browser.tabs.warnOnClose: false
dom.mozApps.used: true
extensions.lastAppVersion: 30.0
network.cookie.prefsMigrated: true
places.database.lastMaintenance: 1404086800
places.history.expiration.transient_current_max_pages: 80505
plugin.disable_full_page_plugin_for_types: application/pdf
plugin.importedState: true
print.printer_Artisan_837(Network).print_bgcolor: false
print.printer_Artisan_837(Network).print_bgimages: false
print.printer_Artisan_837(Network).print_colorspace:
print.printer_Artisan_837(Network).print_command:
print.printer_Artisan_837(Network).print_downloadfonts: false
print.printer_Artisan_837(Network).print_duplex: 1515870810
print.printer_Artisan_837(Network).print_edge_bottom: 0
print.printer_Artisan_837(Network).print_edge_left: 0
print.printer_Artisan_837(Network).print_edge_right: 0
print.printer_Artisan_837(Network).print_edge_top: 0
print.printer_Artisan_837(Network).print_evenpages: true
print.printer_Artisan_837(Network).print_footercenter:
print.printer_Artisan_837(Network).print_footerleft: &PT
print.printer_Artisan_837(Network).print_footerright: &D
print.printer_Artisan_837(Network).print_headercenter:
print.printer_Artisan_837(Network).print_headerleft: &T
print.printer_Artisan_837(Network).print_headerright: &U
print.printer_Artisan_837(Network).print_in_color: true
print.printer_Artisan_837(Network).print_margin_bottom: 0.5
print.printer_Artisan_837(Network).print_margin_left: 0.5
print.printer_Artisan_837(Network).print_margin_right: 0.5
print.printer_Artisan_837(Network).print_margin_top: 0.5
print.printer_Artisan_837(Network).print_oddpages: true
print.printer_Artisan_837(Network).print_orientation: 0
print.printer_Artisan_837(Network).print_page_delay: 50
print.printer_Artisan_837(Network).print_paper_data: 1
print.printer_Artisan_837(Network).print_paper_height: 11.00
print.printer_Artisan_837(Network).print_paper_name:
print.printer_Artisan_837(Network).print_paper_size_type: 0
print.printer_Artisan_837(Network).print_paper_size_unit: 0
print.printer_Artisan_837(Network).print_paper_width: 8.50
print.printer_Artisan_837(Network).print_plex_name:
print.printer_Artisan_837(Network).print_resolution: 1515870810
print.printer_Artisan_837(Network).print_resolution_name:
print.printer_Artisan_837(Network).print_reversed: false
print.printer_Artisan_837(Network).print_scaling: 1.00
print.printer_Artisan_837(Network).print_shrink_to_fit: true
print.printer_Artisan_837(Network).print_to_file: false
print.printer_Artisan_837(Network).print_unwriteable_margin_bottom: 0
print.printer_Artisan_837(Network).print_unwriteable_margin_left: 0
print.printer_Artisan_837(Network).print_unwriteable_margin_right: 0
print.printer_Artisan_837(Network).print_unwriteable_margin_top: 0
privacy.donottrackheader.enabled: true
privacy.sanitize.migrateFx3Prefs: true
security.default_personal_cert: Select Automatically
Graphics
Adapter Description: NVIDIA Quadro FX 500/600 PCI
Adapter Drivers: nv4_disp
Adapter RAM: Unknown
Device ID: 0x032b
DirectWrite Enabled: false (0.0.0.0)
Driver Date: 8-2-2004
Driver Version: 6.5.7.3
GPU #2 Active: false
GPU Accelerated Windows: 1/1 Direct3D 9
Vendor ID: 0x10de
windowLayerManagerRemote: false
AzureCanvasBackend: skia
AzureContentBackend: cairo
AzureFallbackCanvasBackend: cairo
AzureSkiaAccelerated: 0
JavaScript
Incremental GC: true
Accessibility
Activated: false
Prevent Accessibility: 0
Library Versions
NSPR
Expected minimum version: 4.10.6
Version in use: 4.10.6
NSS
Expected minimum version: 3.16 Basic ECC
Version in use: 3.16 Basic ECC
NSSSMIME
Expected minimum version: 3.16 Basic ECC
Version in use: 3.16 Basic ECC
NSSSSL
Expected minimum version: 3.16 Basic ECC
Version in use: 3.16 Basic ECC
NSSUTIL
Expected minimum version: 3.16
Version in use: 3.16

Answer 1

Those '''user_pref("print.printer_Artisan_837 ....''' preferences are what needs to be deleted, with Firefox closed.
I think that "ding-dong" error sound might be due to an old print job stuck in the print cache, though. Open the Windows Control Panel > Printers and Faxes and check the '''Status''' for that printer.