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Why will my Installed addons not enable?

Posted

I have a few addons which I have installed that won't enable. I have tried firefox 18.0.1 and 16.0.1. The addons are: the java console, fiddlerhook 2.3.2.0 and seleniumhq 10.0 ide, java console 6.0.35 and java console 6.0.37. When I install one, it appears enabled but I can't use it so I restart firefox. Upon restart, firefox opens a tab asking me to allow the addon's installation. I check, "Allow this installation" and press "Continue" but that does not work. i can go to the extensions tab and see the addon listed as disabled. Enabling from the extensions tab does not work either.

I do not see any incompatibility messages with the above mentioned addons.

Chosen solution

Yay!

Thanks madperson for nudging me in the right direction.

I tried to delete the files and could not - windows prevented me, saying that I needed permission from myself to delete them. It turns out that my virus software was causing this.

I disabled the Access Protection on the McAfee Virus Scan Console and was able to install the addons. I did not need to delete the extension files.

Thanks!

Read this answer in context 0

Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.11.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • iTunes Detector Plug-in
  • Google Talk Plugin Video Accelerator version:0.1.44.23
  • Version 3.10.2.10212
  • Google Update
  • 5.1.10411.0
  • ActiveTouch General Plugin Container Version 103
  • Adobe Shockwave for Director Netscape plug-in, version 11.5.9.620
  • NVIDIA 3D Vision Streaming plugin for Mozilla browsers
  • NVIDIA 3D Vision plugin for Mozilla browsers
  • Adobe PDF Plug-In For Firefox and Netscape 10.0.1
  • BlackBerry WebSL Browser Plug-In
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers
  • np-mswmp
  • Office Plugin for Netscape Navigator

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0

More Information

philipp
  • Top 10 Contributor
  • Moderator
2042 solutions 8887 answers

Helpful Reply

hello, this sounds like the files in your profile folder that store the information about your extensions might have become corrupted. please go to firefox > help > troubleshooting information > profile - show folder... then windows explorer should open up your profile folder. in there look for the files named extensions.ini, extensions.sqlite, extensions.sqlite-journal (and in some cases also extensions.txt, extensions.rdf). delete or rename those files and quit firefox, they will be regenerated the next time you launch firefox. at this occasion also check that the contents of the profile folder are not write-protected (by right-clicking it > properties).

also see Corrupt extension files

Chosen Solution

Yay!

Thanks madperson for nudging me in the right direction.

I tried to delete the files and could not - windows prevented me, saying that I needed permission from myself to delete them. It turns out that my virus software was causing this.

I disabled the Access Protection on the McAfee Virus Scan Console and was able to install the addons. I did not need to delete the extension files.

Thanks!