Rendering problem - animated spline

This happend since i animated the spline used as pathdeform.

I need a solution to this, please, is urgent. ¿Vlado are you there?

You should try to explain whats actually happening and what you’re trying to achieve a little better.

Ok, i have 3 rectangle wires with path deform WSM applied to form the “T” tail as you can view in the viewport. The spline used by the path deform is the same for the 3 wires.

The problem appears when i animate the vertex of the spline. Now only renders 1 wire and i dont know why.

I can upload the scene if you want.

have you tried applying point cache to this overtop? this could solve the issue temporarily.

Is there a material on the object? Maybe the normals are flipping for some reason.

I’ve tried with a standard gray material and the problem remains.

I’ve rendered with the scanline and renders fine.

One solution i found is to put a turn to poly modifier below the path deform WSN. But i dont know why. It’s strange.
Maybe the point cache is another solution, but i want to know if this is a bug or what.

Vlado, what do you think?

i don’t know aether but if you could post a striped scene with the problem, we could try to help you faster…