An error "Retrieving the COM class factory for component with CLSID" upon using a third party tool

Question

I am trying to do an XSLT transformation using Altova RaptorXML Server2018 that I downloaded now for a trail. I get an error saying "Retrieving the COM class factory for component with CLSID {F02635AC-3BB8-4E68-9066-CAE1D218E3F6} failed due to the following error: 80040154 Class not registered (Exception). The file I downloaded is a 64bit version. Please let me know the solution for this. I use Visual studio 2015for my C# implementation