Bob,
I have seen something similar and this resolved the issue on my machine. I have solved it by copying a few files into different directories. On my machine, they were found in C:\Windows\System32, but they may be somewhere else on yours.
msxml4.dll needs to be copied to:
C:\WINDOWS\WinSxS\x86_Microsoft.MSXML2_6bd6b9abf345378f_4.20.9818.0_x-ww_8ff50c5d
msxml4r.dll needs to be copied to:
C:\WINDOWS\WinSxS\x86_Microsoft.MSXML2R_6bd6b9abf345378f_4.1.0.0_x-ww_29c3ad6a
Allen P.
NI