Warnings about normal angle

Maya
1

I've got a model which I made in Modo and I'm tring to render in Maya with Mental Ray. It works fine until I batch render the scene at which point it keeps spitting out warnings and is taking a LOT longer than it should -

The warnings are as follows...
angle between normal and geometry normal > 90

Anyone know how to fix this?

2

Yeah. Limit the output verbosity. Set it to 'no messages' in Render Global Settings, mental ray tab, Translation -> Export Verbosity.

3

Sounds like youve managed to get flipped normals in modo turing of verbosity wont offcourse speed up the render.