Check http://support.microsoft.com/kb/902330

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>I have a SETUP.EXE built with the InstallShield that comes with VFP9. The SETUP.EXE is used to install run-time files necessary for my VFP 9 application. It has been working very well on many computers (including Windows 7 and Windows 8). But now a new customer ran into the following issue. When executing this SETUP.EXE on Windows 7 Enterprise 32-bit (running as Admin) we get the following error:
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>Error 1935.En error occurred during the installation of assembly 'Microsoft.MSXML.2,publicKeyToke="383983323232h", 
>version="4.20.98.18.0", type="win32",processor Architecture="x86", Please refer to the Help and Support ...
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>The public KeyToken above is bogus (I didn't think it was important to enter it exactly).
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>What could be causing this problem? TIA