I've noticed what appears to be a bug with this mod. It's able to build every single block except for railings and grated catwalks. The ship has all the conveyors running to the needed areas working, the nanite particles are going to the correct places, and the welding effect is triggering, but the block remains either damaged or unbuilt in holo form. Furthermore, it will get stuck trying to build these blocks and thus will do no repairs anywhere else.

If anyone can help me with this that would be appreciated.