Norton Antivirus tells me that my Mac is "at risk". And prompts me to "Fix now". When I click "Fix now" it will say "Fixing" and "Scanning" for a while and then say "Fix Complete" and "Scan Complete", but the "Security"- and "Scans"-buttons below will still say "At Risk". I upgraded to 8.3 yesterday and thought maybe Antivirus wants to do a complete scan, but Full Scan ends up saying "Scan Error" (Quick Scan says "No threads found"). Live Update says "Current".
What do I do?