Hi Daniel, If you're trying to get your Revit model to Tekla Structures you don't need Tekla BIMsight in between. So after exporting your Revit model to IFC you can import it straight to Tekla Structures. See more information here about the interoperability and available plugins between Revit and Tekla Structures http://www.tekla.com/international/solutions/building-construction/Pages/export-revit-tekla-structures.aspx If the plugins won't solve the issue then please contact your local Tekla Structures support http://www.tekla.com/international/Pages/contact-us.aspx or use Tekla extranet forum https://extranet.tekla.com/FORUM/ to get help for your query. This forum is meant for Tekla BIMsight related issues. Thanks, Heikki