Hi.
We’ve been testing on the farm (we’re still on DL 10.3.0.15) with Houdini 20.5.278 and Redshift 3.6.04 (windows 10 and 11). We’ve been able to render with Redshift via Houdini and standalone Redshift without any issues. htoa 6.3.3.1 is also working for us.
We’re also using the latest Deadline ROP that is posted on the mega-ultra-long thread (below) so we can use Husk standalone. Like others, we’ve modified it for our environment.
Did you try re-applying the custom build 3.6.04 again? Maybe something didn’t get extracted or copied over?