iModel composer SS4 with PSDS Error

I am trying to export PlantSpace (XM) data to an iModel and I'm using iModel Composer (SS4) with my PSDS config loaded to point to the correct odbc and ams & ams_user.lib etc.

When I try and open a file (even an empty one), I get a dialog box popping up stating the following, "Unhandled exception has occurred in a component in your application. If you click Continue, the application will ignore this error and attempt to continue" and then below that it says states "Cannot assign a relationship class to a relation that is not associated with a library."

When I click continue, the file opens up but the "Publish i-model" fails and does not produce anything.

Has anybody experienced this before? Can anybody guide me as to what I should change to fix this?