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Version 8 update issue

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OOPS! Just updated to Vers 8 and got this error on first start up, no idea what it means or even if it is significant. Firefox still running but it just occurs to me that it is probably vers 7 that is running. I use windows XP

OOPS! Just updated to Vers 8 and got this error on first start up, no idea what it means or even if it is significant. Firefox still running but it just occurs to me that it is probably vers 7 that is running. I use windows XP

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Looks like a faulty extension - Flagfox. Disable that extension until that extension is fixed by whoever created it.