This is a city block BP made from the 4-lane rail system "Elder Axe's Chunk Aligned RHD Rail Network (v1.0.3)" for the outside railroads. I added the stacker, unloading stations at top, loading stations at bottom, and roboports. The basic city block with nothing in the middle tiles fine vertically and horizontally. The version here, with the stations and roboports, throws errors about stuff being in the way, when trying to place the Blueprint when tiling it vertically. It tiles fine horizontally.
Please help! Figure out what is wrong and let me know, O Ye Factorio Masters. :)