red bang on a disk ! (Virtual Scsi Miniport)

Hi All !
I have a virtual Scsi Miniport driver in 2K, that fakes a disk.
When I try to configure the virtual disk using “Disk Management” under
Computer Management in Administrative Tools, It puts a Red bang on the disk
and shows an error “INTERNAL Error - Configuartion deamon error " when I try
to write signature on it.
The type of the disk is marked by 2K as “unknown”
In “Device Manager” I see the Entry of My Virtual Disk under “Disk Drives”
and it says that this device is " working fine” without any problems.
Could anyone point out as to why the red bang is there and how to correct it.
Any Pointers to this are most welcome.
Thanks in Advance.

Regards
Anurag