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Add-on's have disappeared since new Mozilla update today, Help

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Since the new Mozilla update this morning, all but two Add-Ons have disappeared, not even listed in my Add-On's any more. Not just disabled but vanished. No previous version was saved when updated Itoday!!. Is there any way of recovering the list of Add-On's? Windows 7 system Thank you

Since the new Mozilla update this morning, all but two Add-Ons have disappeared, not even listed in my Add-On's any more. Not just disabled but vanished. No previous version was saved when updated Itoday!!. Is there any way of recovering the list of Add-On's? Windows 7 system Thank you

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