I put iron and graphite in the alloy furnace, then I crash.

crash_report

I'm on it.

Hmm - this is a really weird one. At first, I could recreate the issue easily, but suddenly, for no reason I could see, the issue just... vanished. I'll try to do a bit more experimenting, but perhaps I did make some change that unexpectedly fixed the issue...

Ok - I think I found the issue - should now be fixed :)

Fixed in latest version 2.2b :)

Sorry, is this issue not present then?

Just tested 2.2b, no more crash.

Awesome - thanks :)