I cant research steel even though I have all the prerequisites.

I have the same problem with stone walls, but maybe it's a mod crossing problem.
I go testing it alone withhout any other mod and send a report for it.

I'm having the same issue, cannot research steel replication despite everything else (except infinite) researched.

I also have the steel problem as well...
Edit: Checked with only creative and research queue. Same result.

Damn...same problem

Update: Downloaded the new release from 6h ago. Works!!!
Thanks Pal!

Hmm, let's turn on the PC...The noise looks like a turbojet engine start...hehehehehe

Thanks, it works now. :)