Modular building seems to not work when I'm below a Z-coordinate of 313. Really annoying...anyone else have this problem? I'm running build 0.6.4.1.
Edit: OK a little more playing around and it looks like it happens at certain points in each chunk.
Also to clarify, the modular building I'm speaking of is supposed to allow a board to snap to another board perfectly, fixing position and rotation...hope I'm using the right words lol