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Can not install tamper data on my firefox - Error : Tamper Data Could Not Installed Because It Is Not Compatible On Firefox 12.0 - Please Help

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  • User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.94 Safari/537.36

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jscher2000
  • Top 10 Contributor
3583 Lösungen 32157 Antworten
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Firefox 12 or Firefox 21??

Version 12 is not secure; Mozilla discloses security flaws after each new release. Is something holding you back from upgrading to Firefox 21? Please let us know so we can suggest solutions or workarounds.

If Help > About Firefox shows Firefox 21.0, you may need to clear the preference that is misreporting your version number. See: Websites say that Firefox is outdated or incompatible even though it's the latest version.

Firefox 12 or Firefox 21?? Version 12 is not secure; Mozilla discloses [https://www.mozilla.org/security/known-vulnerabilities/firefox.html security flaws] after each new release. Is something holding you back from upgrading to Firefox 21? Please let us know so we can suggest solutions or workarounds. If Help > About Firefox shows Firefox 21.0, you may need to clear the preference that is misreporting your version number. See: [[Websites say that Firefox is outdated or incompatible even though it's the latest version]].

Fragesteller

Sry 21.0

Sry 21.0
philipp
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3057 Lösungen 14240 Antworten
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the current version that is available at addons.mozilla.org installs fine for me, maybe try to clear the cache & cookies from the site and see if you can get the extension to install afterwards...

the current version that is available at addons.mozilla.org installs fine for me, maybe try to [[Clear the cache - Delete temporary Internet files to fix common website issues|clear the cache]] & [[Delete cookies to remove the information websites have stored on your computer|cookies from the site]] and see if you can get the extension to install afterwards...

Fragesteller

Thanks for your answer but I did all the things that you said and I can see the exact error .

Thanks for your answer but I did all the things that you said and I can see the exact error .

Fragesteller

I did but still see the error ...

I did but still see the error ...
philipp
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3057 Lösungen 14240 Antworten
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maybe the files in your profile folder that store the information about your extensions might have become corrupted. please go to firefox > help > troubleshooting information > profile - show folder... then windows explorer should open up your profile folder. in there look for the files named extensions.ini, extensions.sqlite, extensions.sqlite-journal (and in some cases also extensions.txt, extensions.rdf). delete or rename those files and quit firefox, they will be regenerated the next time you launch firefox.

also see Corrupt extension files

maybe the files in your [[Profiles|profile folder]] that store the information about your extensions might have become corrupted. please go to ''firefox > help > troubleshooting information > profile - show folder...'' then windows explorer should open up your profile folder. in there look for the files named extensions.ini, extensions.sqlite, extensions.sqlite-journal (and in some cases also extensions.txt, extensions.rdf). delete or rename those files and quit firefox, they will be regenerated the next time you launch firefox. also see [https://support.mozilla.org/en-US/kb/Unable%20to%20install%20add-ons#w_corrupt-extension-files Corrupt extension files]
cor-el
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12729 Lösungen 117014 Antworten
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You can try to rename or delete the prefs.js file and possible numbered prefs-##.js files and a possible user.js file to reset all prefs to the default value.

You can try to rename or delete the prefs.js file and possible numbered prefs-##.js files and a possible user.js file to reset all prefs to the default value. *http://kb.mozillazine.org/Preferences_not_saved *http://kb.mozillazine.org/Resetting_preferences
DaneJones 0 Lösungen 1 Antworten
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I discovered after applying this fix that the issue was due to McAfee's plugin was preventing the install of Tamper. Corporate Policy stuff. Shame it claims to be incompatible instead of saying it was blocked.

I discovered after applying this fix that the issue was due to McAfee's plugin was preventing the install of Tamper. Corporate Policy stuff. Shame it claims to be incompatible instead of saying it was blocked.
cor-el
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12729 Lösungen 117014 Antworten
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A lot of extensions have a maxVersion specified in its install.rdf file that is much lower than the current Firefox version.
The extension file doesn't get updated with each Firefox release, but only when a new version of the extension is released and instead its updates.rdf (or updates.xml) file is updated to confirm that the extension is compatible.
This makes it necessary for Firefox to contact the server and get the current compatibility data that confirms that the extension is compatible.

A lot of extensions have a maxVersion specified in its install.rdf file that is much lower than the current Firefox version.<br /> The extension file doesn't get updated with each Firefox release, but only when a new version of the extension is released and instead its updates.rdf (or updates.xml) file is updated to confirm that the extension is compatible.<br /> This makes it necessary for Firefox to contact the server and get the current compatibility data that confirms that the extension is compatible.