Winows Security Center reports that Norton Internet Security is not compatible

Under the Malware Protection heading shown in Windows Security Center, this message appeared today:

 

"Norton Internet Security is on, but is reporting its status to Windows Security Center in a format that is no longer supported."

 

What's up with this?   Could it be that completing a recently recommended update to Internet Explorer 8, from IE7, has caused this "incompatibility?"   If so, what's the solution?