ah and how do I upload a mod? for some reason the mod manager built into the game won't work

hey there.
great mod.

but I've got a question: I've tried creating a StarChildren-like lifestyle trait with motherships producing considerable income (in about everything).
problem is, that neither the new hull I use for it, nor the design that should be spawned at the beginning of the game, show up. so if I try it, I lose the instant I start the game. do you know what could be the reason for that?
that aside: is there a way to give ships an ore cost/requirement? and if so, how would I do that?