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While installing firefox it keeps telling me I don't have a valid win32 application

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I am trying to install firefox 3.6 and it will not let me because it keeps saying I do not have a valid win32 application.

I am trying to install firefox 3.6 and it will not let me because it keeps saying I do not have a valid win32 application.

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It is possible that your anti-virus software is corrupting the downloaded files or otherwise interfering with downloading files by Firefox.
You can try to disable the real-time (live) scanning of files in your anti-virus software temporarily to see if that makes downloading work.

See http://kb.mozillazine.org/Unable_to_save_or_download_files