Hi,

Unfortunately, Microsoft has completely removed the Visio Stencil XML file format (.vsx) in Visio 2013 and later and has introduced some new drawing and stencil (library) formats. We do plan to add support for these new Visio formats, but only in our new diagramming product - NOV Diagram for .NET. We are currently working on the new Visio Drawing format (.vsdx) for NOV Diagram for .NET.

Best Regards,
Nevron Support Team

Since upgrading to Visio 2013, I can not use Visio templates in my Nevron Diagram applications

Are there any plans to fix this?  Any workarounds? 

Thanks