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Since installing Firefox 4 I cannot install addons - help needed with new browser please

  • 1 reply
  • 8 have this problem
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  • Last reply by TonyE

nuska
nuska
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Have tried to install add-ons, and whilst they appear to have installed nothing is added to the tools add-ons button.

Have tried to install add-ons, and whilst they appear to have installed nothing is added to the tools add-ons button.

All Replies (1)

TonyE
TonyE
  • Moderator
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This can be caused if one of the files that stores details of installed extensions is corrupt.

  1. Open your profile folder, for details of how to find it see https://support.mozilla.com/kb/Profiles
  2. Close Firefox
  3. Delete the following files if they exist, extensions.cache, extensions.rdf, extensions.ini and extensions.sqlite
  4. Re-start Firefox, it will then rebuild the list on installed extensions