From #railcraft on IRC:

daniel: hehe, this sounds wrong "[NotEnoughItems]: Error loading brewing ingredients for: mods.railcraft.common.blocks.tracks.ItemTrack@68a0551c"
SkySom: Brew ingredients?
SkySom: Man have I been doing tracks wrong all this time.
Forecaster: daniel, SkySom: now someone has to add the steam boiler.
Forecaster: I meant steam brewer