Hm, weird. I am using Aurora at the moment and this shouldn't happen. But every case is different. I am also running Win7 pro 64bit, Can you go to C:\Program Files (x86)\Aurora and try to run firefox.exe? Does it start up?

If not, Try Firefox Safe Mode to see if Firefox starts up.

If Firefox is not running, you can start Firefox in Safe Mode as follows:

• On Windows: Hold the Shift key when you open the Firefox desktop or Start menu shortcut.
• On Mac: Hold the option key while starting Firefox.
• On Linux: Quit Firefox, go to your Terminal and run firefox -safe-mode
  (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)

Once you get the pop-up, just select "'Start in Safe Mode"

To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

Thanks for the reply but this dose not bring up the Aurora window on my Desktop, the Task Manager shows that Aurora is running.

To check if Aurora is running, in Task manager, click the Processes tab then find firefox.exe and end process.

Do you find firefox.exe? Also try this. Press Windows key + R and type firefox /safe does it open?

Hi I Ended the process and the Task in the Task Manager then tried running the Firefox.exe and then after ending the task and process again then trying "Press Windows key + R and type firefox/safe but there is no change the task manager says it's running but nothing appeares

Do you get the Safe Mode startup window if you first end (kill) all Firefox instances in the task manager and then start Aurora by holding down the Shift key while double-clicking the Aurora desktop shortcut?

yes I have tried that and Aroura opens up on the desktop and I can see web pages.

Here is the trouble shooting info:

Application Basics

Name: Firefox Version: 29.0a2 User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: AVG Security Toolbar Version: 17.3.0.49 Enabled: false ID: avg@toolbar

Name: Download Statusbar Version: 0.9.10 Enabled: false ID: {D4DD63FA-01E4-46a7-B6B1-EDAB7D6AD389}

Name: Forecastfox Version: 2.2.2 Enabled: false ID: {0538E3E3-7E9B-4d49-8831-A227C80A7AD3}

Name: Logitech SetPoint Version: 6.5 Enabled: false ID: {F003DA68-8256-4b37-A6C4-350FA04494DF}

Name: Test Pilot Version: 1.2.3 Enabled: false ID: testpilot@labs.mozilla.com

Important Modified Preferences

accessibility.blockautorefresh: true accessibility.typeaheadfind: true accessibility.typeaheadfind.flashBar: 0 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.newtab.url: about:blank browser.places.smartBookmarksVersion: 6 browser.sessionstore.enabled: true browser.sessionstore.restore_on_demand: false browser.sessionstore.upgradeBackup.latestBuildID: 20140215004001 browser.startup.homepage: http://uk.yahoo.com/ browser.startup.homepage_override.buildID: 20140215004001 browser.startup.homepage_override.mstone: 29.0a2 browser.tabs.loadInBackground: false browser.tabs.warnOnClose: false dom.mozApps.used: true dom.w3c_touch_events.expose: false extensions.lastAppVersion: 29.0a2 font.internaluseonly.changed: true font.name.serif.x-western: Arial gfx.direct3d.checkDX10: true gfx.direct3d.last_used_feature_level_idx: 0 gfx.direct3d.prefer_10_1: true network.cookie.prefsMigrated: true places.database.lastMaintenance: 1392560671 places.history.expiration.transient_current_max_pages: 104858 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true print.printer_Microsoft_XPS_Document_Writer.print_bgcolor: false print.printer_Microsoft_XPS_Document_Writer.print_bgimages: false print.printer_Microsoft_XPS_Document_Writer.print_colorspace: print.printer_Microsoft_XPS_Document_Writer.print_command: print.printer_Microsoft_XPS_Document_Writer.print_downloadfonts: false print.printer_Microsoft_XPS_Document_Writer.print_duplex: 417136548 print.printer_Microsoft_XPS_Document_Writer.print_edge_bottom: 0 print.printer_Microsoft_XPS_Document_Writer.print_edge_left: 0 print.printer_Microsoft_XPS_Document_Writer.print_edge_right: 0 print.printer_Microsoft_XPS_Document_Writer.print_edge_top: 0 print.printer_Microsoft_XPS_Document_Writer.print_evenpages: true print.printer_Microsoft_XPS_Document_Writer.print_footercenter: print.printer_Microsoft_XPS_Document_Writer.print_footerleft: &PT print.printer_Microsoft_XPS_Document_Writer.print_footerright: &D print.printer_Microsoft_XPS_Document_Writer.print_headercenter: print.printer_Microsoft_XPS_Document_Writer.print_headerleft: &T print.printer_Microsoft_XPS_Document_Writer.print_headerright: &U print.printer_Microsoft_XPS_Document_Writer.print_in_color: true print.printer_Microsoft_XPS_Document_Writer.print_margin_bottom: 0.5 print.printer_Microsoft_XPS_Document_Writer.print_margin_left: 0.5 print.printer_Microsoft_XPS_Document_Writer.print_margin_right: 0.5 print.printer_Microsoft_XPS_Document_Writer.print_margin_top: 0.5 print.printer_Microsoft_XPS_Document_Writer.print_oddpages: true print.printer_Microsoft_XPS_Document_Writer.print_orientation: 0 print.printer_Microsoft_XPS_Document_Writer.print_page_delay: 50 print.printer_Microsoft_XPS_Document_Writer.print_paper_data: 1 print.printer_Microsoft_XPS_Document_Writer.print_paper_height: 11.00 print.printer_Microsoft_XPS_Document_Writer.print_paper_name: print.printer_Microsoft_XPS_Document_Writer.print_paper_size_type: 0 print.printer_Microsoft_XPS_Document_Writer.print_paper_size_unit: 0 print.printer_Microsoft_XPS_Document_Writer.print_paper_width: 8.50 print.printer_Microsoft_XPS_Document_Writer.print_plex_name: print.printer_Microsoft_XPS_Document_Writer.print_resolution: 1031833810 print.printer_Microsoft_XPS_Document_Writer.print_resolution_name: print.printer_Microsoft_XPS_Document_Writer.print_reversed: false print.printer_Microsoft_XPS_Document_Writer.print_scaling: 1.00 print.printer_Microsoft_XPS_Document_Writer.print_shrink_to_fit: true print.printer_Microsoft_XPS_Document_Writer.print_to_file: false print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_bottom: 0 print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_left: 0 print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_right: 0 print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_top: 0 privacy.clearOnShutdown.cache: false privacy.clearOnShutdown.formdata: false privacy.clearOnShutdown.history: false privacy.clearOnShutdown.sessions: false privacy.donottrackheader.enabled: true privacy.popups.showBrowserMessage: false privacy.sanitize.migrateFx3Prefs: true privacy.sanitize.timeSpan: 0 security.warn_viewing_mixed: false storage.vacuum.last.index: 1 storage.vacuum.last.places.sqlite: 1389968859 toolkit.startup.recent_crashes: 1

user.js Preferences

Your profile folder contains a user.js file, which includes preferences that were not created by Aurora.

Graphics

Adapter Description: NVIDIA GeForce GTX 650 Adapter Drivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um Adapter RAM: 2048 ClearType Parameters: Gamma: 2200 Pixel Structure: R ClearType Level: 100 Enhanced Contrast: 50 Device ID: 0x0fc6 DirectWrite Enabled: false (6.2.9200.16571) Driver Date: 11-11-2013 Driver Version: 9.18.13.3182 GPU #2 Active: false GPU Accelerated Windows: 0/1 Basic Vendor ID: 0x10de WebGL Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 650 Direct3D9Ex vs_3_0 ps_3_0) 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: 4.10.3 Version in use: 4.10.3

NSS Expected minimum version: 3.16 Basic ECC Beta Version in use: 3.16 Basic ECC Beta

NSSSMIME Expected minimum version: 3.16 Basic ECC Beta Version in use: 3.16 Basic ECC Beta

NSSSSL Expected minimum version: 3.16 Basic ECC Beta Version in use: 3.16 Basic ECC Beta

NSSUTIL Expected minimum version: 3.16 Beta Version in use: 3.16 Beta

What do I need to do next?

Can you start Aurora in normal mode if you disable all extensions and use the default theme and possibly disable hardware acceleration?

In Firefox Safe mode these changes are effective:

• all extensions are disabled (about:addons)
• default theme is used (no persona)
• userChrome.css and userContent.css are ignored (chrome folder)
• default toolbar layout is used (file: localstore-safe.rdf)
• Javascript JIT compilers are disabled (prefs: javascript.options.*jit)
• hardware acceleration is disabled (Options > Advanced > General)

• plugins are not affected
• preferences are not affected

I have just tried as you suggested above and now I cannot start Aurora in normal mode or safe mode absolutely nothing happens when I use the desktop I con or the firefox.exe file in program files.

Did you make sure that all Firefox (Aurora) processes in the Task Manager are closed?

Can you bring up the Profile Manager?

• http://kb.mozillazine.org/Profile_Manager

Does rebooting the computer has any effect?

Thank you has sorted the problem I rebooted the PC and now Aurora is working again thank you.