Yeah for some reason whenever I try to join the guild hall, the game gets stuck on a perpetual black screen. Happens when I join from the Ready Room, from Haven and from manually walking to the garrison and accessing guild halls that way.
I'm also not sure what info we're supposed to provide for bug reports but I'm running Windows 8.1 on the most recent (stable) version of Java provided through Oracle.
Mine works.. guess you guys finally have more stuff than the server can handle, lol.