Can I render Karma to .exr with Water mark ? I am trying to test a sequence. got all excited of building this complex scene, until I found I can't render it out, and trying to comp it……..

WARNING: Entered non-commercial session mode.
WARNING: Entered non-commercial session mode.
<b style='color: red;'>Unable to write to image:

It also crashes the whole thing after 2 mins lets say. No crash log or anything as far as I can tell. All windows and panels disappeared from the desktop.

Renders fine in the Karma persp viewport.

Is there a alternative way of rendering ? via a command line or something ?

There was a problem with the first version of H18, that would switch back to non-commercial state, in error, but later (Daily Builds) of H18 corrected this problem.

I would suspect you are running the production version of H18 and that's why are you getting this error. I'd suggest trying one of the latest Daily Builds of H18.

I am using Daily build 18.0.324