Tsplines mapping issue

Hello everyone,

I’ve been using tsplines for quite sometime even after autodesk dicontinued the plugin. I have been trying the tsplines uv mapping but there seems to be an issue. When I unwrap the tspline everything seems fine in the viewport and the texture flows perfectly across the object. When I try to render though the tsplines mapping is completely disregarded and the it uses the custom mapping channel from rhino instead which is not good
Does anyone know a solution to this problem.

I use tsplines 3.5 rhino 5 and vray 3.6