Tried today's build. It wouldn't finish loading. Got the following error from the debug:
Assert: Num_asteroid_types < Total_asteroid_types
File: c:\fs2_open\code\asteroid\asteroid.cpp
Line: 2082
[This filename points to the location of a file on the computer that built this executable]
Call stack:
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asteroid_init() game_init() WinMainSub() WinMain() WinMainCRTStartup() kernel32.dll 7c816d4f()
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EDIT: I have the 3.6.6 VPs from the SCP download page.