I am very excited to announce that I have finally discovered the source of the main server-crashing bug that has been lingering around for a while that has had me jammed since late august. Connecting to NFC with modern MC crashes the game due to sending completely different information to login that NFC doesn't know how to handle. Old MC knows how to handle it, so I changed something that made this break the game at one point. So I haven't actually solved it yet, but having that first step finally means I can continue taking steps in that direction to fix the server, instead of wondering through the code aimlessly trying to find something I didn't understand. Due to the delay this bug has caused, I might release 1.8.5 with just that fixed and possibly adding in just a few or maybe even no new structures in the terrain yet.