Add-ons pages are all blank, though I have add-ons installed
Firefox 57.0.1. I have several add-ons installed (they show up on the bar, and are working). Yet when I look at about:addons, all tabs except for the Get Add-ons tab are blank - no extensions show up. MacOS Sierra (10.12.6)
I know this used to work on this version of Firefox. Any ideas?
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Thanks for your answer. None of those worked, but it turned out that I had made another change: I was using the extensions at https://github.com/Aris-t2/CustomCSSforFx/tree/master/classic/css to improve the tab coloring (I was having trouble quickly seeing which tab was active). When I turned that off, everything got better.
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Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.
- switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
- do NOT click the "Refresh Firefox" button on the Safe Mode start window
- https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
- https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems
It is possible there is a problem with files in the profile folder that store the extensions registry.
Delete the extensions.* files (e.g. extensions.json, extensions.ini, extensions.sqlite) and compatibility.ini in the Firefox profile folder with Firefox closed to reset the extensions registry.
New files will be created when required.
See "Corrupt extension files":
- https://support.mozilla.org/en-US/kb/unable-install-add-ons-extensions-or-themes
- http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
If you see disabled or not compatible extensions in ""3-bar" menu button or Tools -> Add-ons -> Extensions" then check if there is a compatibility update available.
- click the cogwheel button (left of the Search bar) on the about:addons page to "Check for Updates"
If this didn't help then delete add-ons.json and possibly prefs.js in case there is a problem with preferences.
You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.
- Help -> Troubleshooting Information -> Profile Directory:
Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder - http://kb.mozillazine.org/Profile_folder_-_Firefox
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Thanks for your answer. None of those worked, but it turned out that I had made another change: I was using the extensions at https://github.com/Aris-t2/CustomCSSforFx/tree/master/classic/css to improve the tab coloring (I was having trouble quickly seeing which tab was active). When I turned that off, everything got better.
I am glad to hear that your problem has been resolved. If you haven't already, *Please select the answer that solves the problem* YOURS. This will help other users with similar problems find the solution more easily. Thank you for contacting Mozilla Support.