I have an XP-SP3 OS (Originally XP Media Center) and have experienced the error mentioned in the Subject; After trouble shooting a virus issue and running a series of tools recommended by Kaspersky (including ComboFIx, TDSKILLER, AVZ) I was directed to uninstall the 2009 version of Kaspersky and then reisntall the 2011 version. I was given an uninstall tool to run in Safe mode and told to run this twice.
I did this on the second run I received a Windows Scrip Error - Microsoft VBScript runtime Error.
The Kaspersky Tech also directed me to delete the INFCACHE.1 inside C:\Windows\inf\
Upon restart I received the error mentioned in this thread: