Hello folks, I have a wired issue with karma, maybe I'm missing something. So I'm rendering something with motion blur, I have everything enabled and I can see the motion blur in "karma" viewport. But when I render to disk or Mplay I don't see motion blur... is there something that I'm missing? a setting or so? thanks for your help!

I'm having the same issue. Did you ever resolve this?

Ah it's the instantaneous shutter setting on the rop. I changed the name of the karma render settings node and the expression doesn't update.