Unable to connect to service (hr=80004002) - AddScanPackageService

Folks,

I am trying to run MS offline patch scan and have been getting following
VBscript error:

/==================================================/
C:\WINNT\Temp\patchscan.vbs(197, 1) Microsoft VBScript runtime error: Class
doesn't support Automation
/==================================================/

Line 197 is simply adding AddScanPackageService("Offline Sync Service",
C:\WINNT\Temp\wsusscn2.cab" service to Service manager.

Here is a snippet from WindowsUpdate.log file:

/==================================================/
2010-03-05 10:51:34:635 7336 948 Misc
=========== Logging initialized (build: 7.4.7600.226, tz: -0600) ===========
2010-03-05 10:51:34:635 7336 948 Misc =
Process: C:\WINNT\system32\cscript.exe
2010-03-05 10:51:34:635 7336 948 Misc =
Module: C:\WINNT\system32\wuapi.dll
2010-03-05 10:51:34:635 7336 948 Service
Registering proxy/stubs.
2010-03-05 10:51:34:635 7336 948 COMAPI
----------- COMAPI: IUpdateServiceManager::AddScanPackageService
-----------
2010-03-05 10:51:34:635 7336 948 COMAPI
- ServiceName = Offline Sync Service
2010-03-05 10:51:34:635 7336 948 COMAPI
- ScanFileLocation = C:\WINNT\Temp\wsusscn2.cab
2010-03-05 10:51:34:650 7336 948 COMAPI
FATAL: Unable to connect to the service (hr=80004002)
2010-03-05 10:51:34:650 7336 948 COMAPI
WARNING: Unable to establish connection to the service. (hr=80004002)
2010-03-05 10:51:34:650 7336 948 COMAPI
- Exit code = 0x80004002
2010-03-05 10:56:17:341 4696 1438 AU AU
received event of type: 3
2010-03-05 10:57:51:196 4696 1438 AU AU
received event of type: 3
/==================================================/

WUA is as version 7.4.7600.226 and cscript is at version 5.6

I wonder whether some update services are not registered properly? AU
service is running. Can anyone tell me what could be going on here .. do I
need to manually register some services?

Thanks for any tips.