I would like to start looking into integrating the API into some software I'm working on. Basically I am hoping someone can help me with using the sample code at https://support.ptc.com/appserver/cs/view/solution.jsp?n=CS161216. When I try to include mksapi.dll as a reference in my project, I get an error "A reference to 'mksapi.dll' could not be added." I don't have the Visual Studio integration setup but I was under the impression (maybe incorrectly) that this wouldn't be required. Has anyone encountered this before and found a solution?