FOSS gamedev and creative worlds

Sometime when you join a server, you will have entire screen filled with ERROR[AsyncWorkerThread_2] for some time, I've added screenshot of chat history with this errors:
Win 7 64 bit, MT 0.4.13 64bit msvc, Xanadu server (and many other)

I can confirm this, it happens when you enter a server "too fast" for the serverlist to appear, and it is displayed in the server chat later.

Fixed in 29 Jan 2016 build.