Spoke too soon, I guess. The web interface is working fine (with several problems on IE 8, but who doesn't?), now the service is misbehaving:
11-03-2009 14:08:26: Database connection successful, starting up service
11-03-2009 14:08:26: Operator '=' is not defined for type 'DBNull' and type 'Boolean'.
at Microsoft.VisualBasic.CompilerServices.Operators.ConditionalCompareObjectEqual(Object Left, Object Right, Boolean TextCompare)
at LansweeperService.MdlLicenceCode.checklicense()
at LansweeperService.starter.startsweeper()
Background:
Lansweeper is running on WXP SP3, IIS 5.1
Database installed on SQL Server 2008, 64 bits
Regards
Rui Meleiro