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Update: July 19, 2006: Unfortunately, I assumed that this fix would work for this new beta but it does not 😦 . Works with the previous version – Bon Echo.
I’m one of those early adopters as far as alpha and beta versions of apps go. Silly thrills coz they usually land me into trouble. But I love trying out new stuff so there’s no stopping me.

When I installed Bon Echo (FireFox 2.01a) most of my old extensions stopped working. I missed the Performancing extension especially. I had been using it to make my blog posts. Surfed a lot and literally stumbled across the solution which worked. A few days ago I downloaded FireFox 2.0b and once again I was stuck without my extensions. Being scatty, forgetful and non techy, I couldnt recall the solution. Finally after much hunting I found this amongst my 2000 odd bookmark collection on blinklist. Decided I wasnt going to let that happen again and I’m putting it below for easier access in future.

I found Liew Cheon Fong’s solution listed on John’s blog and was ever so grateful. I’m putting a copy below for easy reference.

  1. At the location bar, enter: about:config. This will show you a list of Firefox internal preferences.
  2. Right-click on the list, select New > String
  3. Enter “app.extensions.version” (without quotes) for the preference name.
  4. Then, enter “1.0” (without quotes) as the value for app.extensions.version.
  5. Restart Firefox 1.5, then enable those disabled Firefox extensions.
  6. Restart Firefox 1.5 again to active the extensions. Done.



  1. Glad that it helps you 🙂

  2. thanks for stopping by 😀 unfortunately it does not work as well as in the bon echo version. if you know of any other solutions and see this message do let me know.

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