Either I've gone stupid or Engineer has. I only recently came back to the game from like, long before there was science, so maybe I just don't remember how things work. I'm trying to use Engineer's dV calculations to build a simple rocket. I need to see the cumulative dV for each stage, which as I understand it, engineer does. But when I try to view the craft's characteristics, it does not seem to notice all of the engines on this very simple rocket. Here is a screenshot: http://cloud-4.steampowered.com/ugc/53243610355743838/33F675AE004F694352DCE75EB3621B5E6D5EE1A7/ Please note the quite simple and logical staging sequence, and the fact that I have two LV-30 liquid engines with access to fuel. What is the problem here? I suspect that my problem is so simple nobody has ever bothered to post about it, but I am at a loss.