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Cannot install "plugin/extension name" because Firefox cannot modify the needed file. This is happening for any and every kind of plugin theme you could think of. This started when I upgraded to Firefox 11 just now.

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  • Son yanıtı yazan: cor-el

wally247
wally247
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I just upgraded to Firefox 11.0 (unwillingly) and I get the following whenever I try to install ANYTHING at all. Themes, add-ons...it doesn't matter, the result is the same.

"Cannot install "plugin name here" because Firefox cannot modify the needed file.

If the fix requires installing a plugin...well, that's not going to work obviously.

Anybody know how to fix this?

I just upgraded to Firefox 11.0 (unwillingly) and I get the following whenever I try to install ANYTHING at all. Themes, add-ons...it doesn't matter, the result is the same. "Cannot install "plugin name here" because Firefox cannot modify the needed file. If the fix requires installing a plugin...well, that's not going to work obviously. Anybody know how to fix this?

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cor-el
cor-el
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You shouldn't see such an error.
That error usually indicates that an extension or dictionary needs to be unpacked to make it work.

Firefox 4 and later no longer unpacks an extension automatically, but renames the XPI file to the ID of the extension and copies that file to the extensions folder in the Firefox Profile Folder. If an extension needs to be unpacked then there should be an unpack directive (<em:unpack>true</em:unpack>) in the install.rdf file of that extension

You can try to set the Boolean pref extensions.alwaysUnpack to true on the about:config page.