This add-on could not be installed because it seems to be altered in mozilla

This add-on could not be installed because it seems to be altered in mozilla

This occurs when the extension is signed and has been changed (tampered with).
Ensure that security software is not decompress the file for inspection and he repacks because that would invalidate the signature manifest.

Tags: Firefox

Similar Questions

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    I tried to install add-ons for Firefox 4, but were unsuccessful.

    If I try to install inside the about: addons, the add-on will download, but then the installation bar will not change.
    If I try to install from addons.mozilla.org, the add-on download but then I get a message in the info box on site (at the side of the address bar) which reads, "[module] could not be installed because Firefox failed to modify the necessary."

    If I try to install any other modules after that, I get an error.

    I'm under Ubuntu 10.10 on a Toshiba Satellite U400.

    On config variables xpi: enabled = true.

    I'm having this problem. I am also under Ubuntu 10.10 and Firefox 4.0 (Canonical version 1.0) 32-bit.
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    Error: Cannot cancel install of https://addons.mozilla.org/firefox/downloads/latest/748/addon-748-latest.xpi?src=addondetail of that State (5)
    Source file: resource://gre/modules/XPIProvider.jsm
    Line: 5168

    When you try to install, I get this error in the error console:

    Error: this.installLocation is not defined
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    Line: 5751

    I read on the troubleshooting page of Firefox that xpinstall.enabled should be set to true in the configuration: about, but there is not in my list of config, so I tried to add it, but it made no difference.

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    Please refer to the instructions in the links below, this should help solve the problem:

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    This is the message I get when I try to install the latest version of DPS App Builder "application could not be installed because the Installer file is damaged. Try to get a new setup of the author of the application file. On my Mac.


    I tried to uninstall and reinstall


    Help, please!

    What version of Mac OS do you have? I guess it's 10.6.8 which is not supported by the App Builder. You need to update to a newer version of Mac OS.

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    This XPI has a maxVersion of 6, it must be updated for Firefox 7.

    You can save this extension on the disc and open it to supplant the maxVersion yourself if you're feeling adventurous.

    If you don't already have it, download and install 7-Zip program - this is a file management program archive utility for Windows - free and open source.

    http://www.7-zip.org/

    Once 7-Zip is installed, right click the XPI file and select open with > 7 - Zip File Manager

    Once you see the content of this XPI, locate the file install.rdf .
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    To install the extension en you have on the local disk, you can use the file > open file... or simply the XPI to slip into the Firefox browser window.

    You will need to test this extension to ensure that it actually works again in Firefox 7.

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    The error message happens chronically today.

    It does not matter what I try to install the air file.

    I uninstalled, cleaned the registry and all the usual things.

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    Windows 7. Current update.

    processor 2.8 ghz, 12 G Ram - one machine to cook breakfast and make the beds.



    " The application could not be installed because the Installer file is damaged. Try to get a new setup of the author of the application file. "



    This is the last log of installation-

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    Someone would have noticed?


    [2015-02 - 18:10:58:58] Unpackaging/validation complete

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    I got a response on another area of support.

    And

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    I think it's the kind of thing to do to post the

    steps that allowed me to correct.

    I knew I had the latest Adobe air platform.

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    Instinct made me disconnect the machine from the router.

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    Try to download a trial version of Acrobat Pro, but of course, I have an error message: "the application could not be installed because the Installer file is damaged. Try to get a new setup of the author of the application file. Any suggestions?

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    Gaurav Prakash - Microsoft Support
    Visit our Microsoft answers feedback Forum and let us know what you think.

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