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The 3 balls won't rotate and copy videos?

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Hello, For some reason my firefox went back to defaults and now I can't copy videos. The balls won't rotate. I have download helper 5.1 and fire fox 37?

Hello, For some reason my firefox went back to defaults and now I can't copy videos. The balls won't rotate. I have download helper 5.1 and fire fox 37?

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You should contact the support site for that program. But first try to download the current full installer.

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Hello, I still have the problem even after I installed the current full installer. What should I try next? Pudgy

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You can check for problems with preferences. You can try to edit the prefs.js file with Firefox closed and remove all lines that refer to extensions.dwhelper prefs.

You can also try to click the Restore Defaults button in the Customize palette window or delete the xulstore.json file.

  • "3-bar" Firefox menu button > Customize
  • View > Toolbars > Customize

You can use this button to go to the currently used Firefox profile folder:


It is possible that there is a problem with the file(s) that store the extensions registry.

Delete the extensions.* files (e.g. extensions.json, extensions.sqlite, extensions.ini) and compatibility.ini in the Firefox profile folder to reset the extensions registry.

New files will be created when required.

See "Corrupt extension files":

If you see disabled or not compatible extensions in "Firefox/Tools > Add-ons > Extensions" then click the Tools button at the left end of the Search bar to check if there is a compatibility update available.

If this hasn't helped then also delete possible addons.json and addons.sqlite files.