We've installed (and integrated into the console) the SBS Best
Practice Analyser. SBS 2008 Standard.

Our console shows this message for the server:

The Best Practices Analyzer has completed a scan of your system and
has found errors in your system configuration. For detailed
information about the scan errors, manually run the Best Practices
Analyzer tool. Error Count: 1

but whenever we manually run it, we get no errors.

Any ideas? Or where to start looking?