How to access installed Add-ons like OneTab?

I have installed OneTab to my Firefox am unsure how it works as I can't find the icon/button/shortcut to access it. It is showing as 'Enabled' in the Extensions list.

Hi,
Thanks a lot again for the suggestions.
I did go through the OneTab Help page and the following options are available to access/disply OneTab.
1. The icon on the Toolbar (In my case this neither shows nor lets me add it from the List)
2. The OneTab right click menu (In my case, there is no Onetab menu in the default Right Click menu)
3. Keyboard Shortcut - Alt + Shift + 1 (This doesn’t work as well)
I had written to the OneTab team (Onetab.com/feedback) twice and am yet to receive a reply from them. In the ‘Add-Ons’ page, I have now removed all other extensions and OneTab is showing as enabled.
It could be a setting that is preventing OneTab to alter the Toolbars as Gnospen is suggesting and this point brings to my notice an update on the OneTab Info (in the ‘Add-Ons’ page) that was added in Nov 2014:
''A small minority of people are seeing a blank page instead of their OneTab tabs. This does *not* mean that you have lost them. They are still stored in Firefox, but something is preventing the OneTab extension from loading properly. Please try going to the Add-Ons menu option in Firefox and temporarily disabling all add-ons except OneTab and then restarting Firefox. This should allow OneTab to load normally. We are also looking into an alternate solution for those this does not work for. ''
Just for the record, I have already tried the following:
• Disabled all other extensions but Onetab and restarted Firefox.
• Removed all other extensions but OneTab and and restarted Firefox.
• Removed all extensions including OneTab and re-installed just OneTab after restarting Firefox.
• I removed Firfox and re-installed it and re-installed just OneTab.
Thanks.

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<code>
2010-04-02 21:36:38 - ExtensionManager:_finishOperations - failure, catching exception - lineno: 359 - file: undefined - [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIProperties.get]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: file:///Applications/Web/Firefox.app/Contents/MacOS/components/nsExtensionManager.js :: getDirInternal :: line 359" data: no]
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<code>
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; fr-FR; rv:1.9.3) Gecko/20100412 Minefield/3.7
Application Basics
Name
Firefox
Version
3.7
Profile Directory
Show in Finder
Installed Plugins
about:plugins
Build Configuration
about:buildconfig
Extensions
Name
Version
Enabled
ID
Adblock Plus
1.1.3
true
Adblock Plus: Element Hiding Helper
1.0.6
true
[email protected]
Add-on Collector
1.1.1
false
[email protected]
BetterPrivacy
1.47
true
Brief
1.2.5
true
[email protected]
British English Dictionary
1.19
false
[email protected]
BugMeNot
2.2
true
{987311C6-B504-4aa2-90BF-60CC49808D42}
CustomizeGoogle
0.76
true
Dictionary Switcher
1.0.1
true
[email protected]
Dictionnaire français «Réforme 1990»
3.5
true
[email protected]
Diigo Bookmarks and Web Annotations
4.1.0.46
true
Firefox PDF Plugin for Mac OS X
1.1.3
true
[email protected]
FoxyProxy Standard
2.19.1
false
[email protected]
Get jetable mail
0.4.1
true
{26af1522-982e-c0c4-f54a-7e69fb6432f5}
It's All Text!
1.4.1
true
[email protected]
Lazarus: Form Recovery
2.0.5
true
[email protected]
Personas
1.5.2
true
[email protected]
Tab in Textarea
0.9
true
Torbutton
1.2.4
false
URL Tooltip
1.2.1
true
[email protected]
User Agent Switcher
0.7.2
true
Xmarks
3.5.7
true
[email protected]
Zotero
2.0.2
false
[email protected]
Image Zoom
0.4.4
true
{1A2D0EC4-75F5-4c91-89C4-3656F6E44B68}
Firebug
1.5.3
false
[email protected]
Modified Preferences
Name
Value
accessibility.typeaheadfind.flashBar
0
browser.history_expire_days.mirror
180
browser.history_expire_days_min
7
browser.places.importBookmarksHTML
false
browser.places.smartBookmarksVersion
2
browser.startup.homepage
about:mozilla
browser.startup.homepage_override.mstone
rv:1.9.3
browser.tabs.warnOnClose
false
dom.disable_window_move_resize
true
dom.disable_window_status_change
false
dom.event.contextmenu.enabled
false
extensions.checkCompatibility
false
extensions.checkCompatibility.3.6
false
extensions.checkCompatibility.3.6b
false
extensions.checkCompatibility.3.7
false
extensions.checkCompatibility.3.7a
false
extensions.checkCompatibility.3.7a5
false
extensions.checkCompatibility.3.7b
false
extensions.lastAppVersion
3.7
font.minimum-size.x-western
11
font.name.monospace.x-western
DejaVu Sans Mono
font.name.sans-serif.x-western
DejaVu Sans
font.name.serif.x-western
DejaVu Serif
general.useragent.extra.betterprivacy
general.useragent.locale
fr-FR
javascript.options.showInConsole
true
keyword.URL
https://[www.google.com]/search?ie=UTF-8&oe=UTF-8&sourceid=navclient&gfns=1&q=
network.cookie.prefsMigrated
true
network.http.max-connections
60
network.http.max-connections-per-server
30
network.http.max-persistent-connections-per-server
8
network.http.pipelining
true
network.http.pipelining.maxrequests
8
network.http.pipelining.ssl
true
network.http.proxy.pipelining
true
network.security.ports.banned
8118,8123,9050,9051
places.history.expiration.transient_current_max_pages
96636
places.last_vacuum
1276761638
print.macosx.pagesetup-2
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VO…
print.print_bgcolor
true
print.print_bgimages
true
print.print_command
print.print_downloadfonts
false
print.print_evenpages
true
print.print_footerleft
print.print_footerright
&PT
print.print_headerleft
print.print_headerright
&D
print.print_in_color
true
print.print_margin_bottom
0.5
print.print_margin_left
0.5
print.print_margin_right
0.5
print.print_margin_top
0.5
print.print_oddpages
true
print.print_orientation
0
print.print_pagedelay
500
print.print_paper_data
0
print.print_paper_height
11.00
print.print_paper_size_type
1
print.print_paper_size_unit
0
print.print_paper_width
8.50
print.print_printer
print.print_reversed
false
print.print_scaling
1.00
print.print_shrink_to_fit
true
print.print_to_file
false
print.print_unwriteable_margin_bottom
57
print.print_unwriteable_margin_left
25
print.print_unwriteable_margin_right
25
print.print_unwriteable_margin_top
25
privacy.cpd.cookies
false
privacy.cpd.formdata
false
privacy.cpd.sessions
false
privacy.sanitize.migrateFx3Prefs
true
privacy.sanitize.timeSpan
0
security.crl.autoupdate.dayCnt.
1
security.crl.autoupdate.enable.
true
security.crl.autoupdate.errCount.
0
security.crl.autoupdate.errDetail.
Download of the CRL failed due to Network problems.
security.crl.autoupdate.freqCnt.
1
security.crl.autoupdate.nextInstant.
03/07/10 23:00:00
security.crl.autoupdate.timingType.
1
security.crl.autoupdate.url.
http://crl.certificat.com/DGI/DGI_UsagerB.crl
security.disable_button.openCertManager
false
security.warn_viewing_mixed
false
</code>
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I followed your help directions on "Corrupt extension files" under "Unable to install add-ons", foolishly deleting the files you told me to. Now firefox won't open. I tried reinstalling firefox but it still won't open. Now what do I do?

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See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]
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Create a new profile as a test to check if your current profile is causing the problems.<br />
See [[Basic Troubleshooting#Make_a_new_profile|Basic Troubleshooting: Make a new profile]]
If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)<br />
See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

How to access installed Add-ons like OneTab?

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