FWIW reregistering that DLL didn't fix the problem.

>Her notebook got installed from a ghost image by network services and it appears to be a relatively hosed up image... and of course we don't just have CDs to install from... we'll try regsvr32 on C:\Program Files\Microsoft Visual Studio\VSS\win32\SSSCC.DLL and see if that gets it going.
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>>Sounds like SCC COM interface for VSS is not installed. Is it an optional component during VSS install?