The refinery will accept crude, so the ships unload, they are not exactly set up to consume the crude, because I have allowed trains to load crude for transport elsewhere. I did not want the refinery to consume the crude before a train had a chance to load some for other destinations, just trying to be a bit versatile.
I had noticed that sometimes only the tracks appear when you place the refinery model. It depends on where on the baseboard you place it, try a different position and it will appear. This is random and I have no idea why it occurs.
Alternatively, place the model, and then save and exit the map. The complete model will appear when you reload the map.
Ian