It won't let me select the materials to construct a station...or rather they're no visible. What up is?

are you in two BFFs? if so make sure they are not Squaded. .. and if you are trying to build a faction Station make sure the mats are made over to the faction and you have the mats assign priv.

^ What Xakic said. be in right faction is in a territory owned by someone, unsquad, make sure mats are made over and should be good to go, If in faction then as he said appropriate privs from said faction.