Arnold suddenly can't render cloth sims?

[ssjenforcer191191191]

 

I'm on c4d 2025.3.3 and Arnold 4.8.3.2.

Cloth sims can't render.  The object is just a flat cloth with absolutely no dynamics or anything.

Is this a bug and fixed in new versions?

I cached it.  Nothing.

Rigid body renders.  Even rope sims render.

Cloth cannot render.

EDIT:
Ok, so apparently it only can't render cloth if there is a subdivision surface involved in any way.

Ok.  I forgot about the SDS checkbox in the Arnold tag.

Been a while since I used cloth sims.

[peter_horvath · Accepted solution]

Right, there are some use-cases where Arnold can't subdivide the geometry or the Arnold subdivision does not match the subdivision method in Cinema 4D. In that case you have to add Arnold tag to the object and force exporting the subdivided geometry.