Hi, has anyone experienced this before?

I'm encountering an issue that no one else seems to have. Every time I add an AOV, regardless of which one, the beauty render gets a strange colour overlay.

This colour overlay is baked into the beauty render itself, although the individual passes are fine and can be rebuilt without issues. This shows up in the output images and the IPR.

The colour varies — sometimes blue, magenta, or yellow and occasionally it appears only on certain parts of the model.

I'm using a Karma Material Builder for the shaders with the default Karma XPU settings.

attached are images of the problem...

version - 20.5.370
nvidia GeForce RTX 4090

I think this was an nvidia driver bug that got fixed with newer drivers and also with newer houdini version. try updating to a recent production build to see if that fixes it. If not, try a new driver version as well (be careful, the latest drivers seems to be pretty problematic)

It was a bug, an update to 20.5.550 fixed the issue!