Active Scanning not working after restarting LS-Service

[Lars_Vopicka]

10.07.2009 12:56:15: Database connection successful, starting up service

10.07.2009 12:56:17: Conversion from type 'DBNull' to type 'String' is not valid.
at Microsoft.VisualBasic.CompilerServices.Conversions.ToString(Object Value)
at LansweeperService.mdlActivescanning.ActiveScan()

What can be the cause?
I still can use Lstrigger without Problems.

I have about 550 Servers in the database, halfway through our forrest.
Version is 3.5.1.27910

As suggested somwhere here I have looked into tblComputers, there is no blank domain field.

[Hemoco]

My guess would be in the active scanning configuration a field not filled in.

[Lars_Vopicka]

Lansweeper wrote:
My guess would be in the active scanning configuration a field not filled in.

I was just about to leave for a 3 weeks vacation. Your answer reached me just in time. You were right.
A field was blank in the OU filtering tab.

Up and operational again -Thanks a lot!!!