Importing from SolidWorks 2013 x64 Edition (student 1-year edition) to Keyshot 4 64.

I've never had an issue before. Just finished making some models last week and then I get this error when I'm prepping for an upcoming meeting. It is important to note that Keyshot seems to be accepting other models, just not these new ones.

Error message-

"“[file in question]” does not contain 3d geometry. You may need to export polygonal data from your modeling system. For additional help please contact support@luxion.com"

I tried googleing the issue, which showed others has the same issue, but was unable to find help. What should I do?