Recent answers to can't open a new tab,no reaction by clicking the new tab button ( + ), why ?https://support.mozilla.org/en-US/questions/9536322013-08-17T16:07:36-07:00If it works in Safe Mode and in normal mode with all extensions (Firefox/Tools > Add-ons > Ext2013-08-17T16:07:36-07:00cor-elhttps://support.mozilla.org/en-US/questions/953632#answer-469283<p>If it works in Safe Mode and in normal mode with all extensions (Firefox/Tools &gt; Add-ons &gt; Extensions) disabled then try to find which extension is causing it by enabling one extension at a time until the problem reappears.
</p><p>Close and restart Firefox after each change via "Firefox &gt; Exit" (Windows: Firefox/File &gt; Exit; Mac: Firefox &gt; Quit Firefox; Linux: Firefox/File &gt; Quit)
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<ul><li><a href="https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes" rel="nofollow">https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes</a>
</li></ul>safe mode solve my problem, but which add on I must remove?
2013-08-17T01:41:14-07:00mdehghan85https://support.mozilla.org/en-US/questions/953632#answer-468980<p>safe mode solve my problem, but which add on I must remove?
</p>you are welcome
2013-03-16T01:02:00-07:00ideatohttps://support.mozilla.org/en-US/questions/953632#answer-417772<p>you are welcome
</p>Problem solved by removing the extension. Ideato, you are my hero, thank you very much for your advi2013-03-16T00:58:04-07:00john_akuhttps://support.mozilla.org/en-US/questions/953632#answer-417769<p>Problem solved by removing the extension. Ideato, you are my hero, thank you very much for your advice.
</p>Ok, thank you very much for your help. Hope can solve the problem, will let you know. Thanks again.
2013-03-16T00:37:14-07:00john_akuhttps://support.mozilla.org/en-US/questions/953632#answer-417764<p>Ok, thank you very much for your help. Hope can solve the problem, will let you know. Thanks again.
</p>Nooo, don't uninstall, see : Disable all extensions and then one by one Test for faulty extens2013-03-16T00:27:33-07:00ideatohttps://support.mozilla.org/en-US/questions/953632#answer-417760<p>Nooo, <strong>don't uninstall</strong>, see&nbsp;: <a href="https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems#w_disable-all-extensions" rel="nofollow">Disable all extensions</a> and then one by one <a href="https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems#w_test-for-faulty-extensions" rel="nofollow">Test for faulty extensions</a>
</p><p>thanks
</p>Hi Ideato, just followed your advice " start in safe mode " and it worked well. but as I closed the 2013-03-16T00:13:25-07:00john_akuhttps://support.mozilla.org/en-US/questions/953632#answer-417756<p>Hi Ideato, just followed your advice " start in safe mode " and it worked well. but as I closed the firefox to exit the safe mode and open it again, the problem is still the same. do you think it will vanished if I uninstall and then reinstall the firefox &nbsp;? otherwise i have to use the safe mode all the time. I really appreciate your advice.
</p>Hi Ideato, thanks for your tip, will try it and tell you the result.
2013-03-15T23:51:40-07:00john_akuhttps://support.mozilla.org/en-US/questions/953632#answer-417754<p>Hi Ideato, thanks for your tip, will try it and tell you the result.
</p>Hello john_aku, Try Firefox Safe Mode to see if the problem goes away. Safe Mode is a troubleshootin2013-03-15T23:36:21-07:00ideatohttps://support.mozilla.org/en-US/questions/953632#answer-417750<p>Hello john_aku, <strong>Try Firefox Safe Mode</strong> to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
</p><p><em>(If you're not using it, switch to the Default theme.)</em>
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<ul><li> You can open Firefox 4.0+ in Safe Mode by holding the <strong>Shift</strong> key when you open the Firefox desktop or Start menu shortcut.
</li><li> Or open the Help menu and click on the <strong>Restart with Add-ons Disabled...</strong> menu item while Firefox is running.
</li></ul>
<p><em>Once you get the pop-up, just select "'Start in Safe Mode"</em>
</p><p><em><strong>If the issue is not present in Firefox Safe Mode</strong></em>, your problem is probably caused by an extension, and you need to figure out which one. Please follow the <a href="/en-US/kb/troubleshoot-extensions-themes-to-fix-problems" rel="nofollow">Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems</a> article for that.
</p><p><em>To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.</em>
</p><p><em>When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.</em>
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if the above did <strong>not correct</strong> the issue, see&nbsp;: <a href="http://kb.mozillazine.org/Corrupt_localstore.rdf" rel="nofollow">Corrupt localstore.rdf</a>
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thank you
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