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I got msg below when trying to download extensions/plugins.

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"Firefox could not install the file at https://addons.mozilla.org/firefox/downloads/latest/3006/addon-3006-latest.xpi?src=homepagebrowse because: Unexpected installation error Review the Error Console log for more details. -203

"Firefox could not install the file at https://addons.mozilla.org/firefox/downloads/latest/3006/addon-3006-latest.xpi?src=homepagebrowse because: Unexpected installation error Review the Error Console log for more details. -203

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