On the red board fails the command fillet / blend / chamfer edge, for example, one unit (with fillet srf works). Check it out.
fillet chamfer failed.3dm (152.6 KB)
Yeah, that is an odd one - My know-nothing guess is that it can be fixed, I’ll add it to the pile, thanks.
http://mcneel.myjetbrains.com/youtrack/issue/RH-33001
-Pascal