Lansweeper not scan itself (server)

[sisman]

Hi, Lansweeper didn't scan server on which he resides for 6 months now. Trigger scan works, connection tester also see server. No errors.
So to clarify, on this server Lansweeper is installed.

[Hemoco]

Please contact us by e-mail for this problem (lansweeper@hemoco.com)

[sisman]

I have upgraded Lansweeper to latest 4.0.0.40 version,still not scanned.

Also in error.log file I see for all computers following:
10/22/2010 14:57:47: AD cleanup "computername" The specified domain does not exist or cannot be contacted.

Why ?

[sisman]

I forgot to mention that this server is virtual machine...