This is a problem with the installer ; it is attempting to install the 32-bit version of MSXML (the Microsoft XML library) on a 64-bit machine (or vice versa).
The first part of the solution to this is to install the correct version for your machine. The downloads list is here ; the x64 version is probably what you need.
Alas, unless the vendor supplies an x64 package, or will supply a package without MSXML bundled, or unless you open the package and tinker with it (in a tool like Orca, the MSI database editor), this is where the story ends. It's a shame MSI packages are so difficult to work with ; unlike .DEB which is just a fancy archive, MSI is a database (or a very fancy archive).
The other path is to consider installing a native package that provides the features you wanted out of the Windows software.