Vray-grasshopper fails to show geometry

Hi There!

I am having a issue with v-ray render and grasshopper. Only certain breps are shown in the render viewport. You can check in the screenshot: the pipe geometry is shown as a single tube…
I have the feeling that can be something related to the fact that is a list of geometries and v ray is seeing just the first one. Is strange because with the the objects in the project is working fine…
Any idea?
Thank you

ANYONE FIGURE THIS OUT?
I have geometry in a list and it doesnt show in vray

is there a data dam for vray when updating the geometry

without more details no one can help.

This is not really helpful in diagnostic terms.