When I was trying to start the Thor scenarios, it says I'm missing vessel.cpp. Here's what orbiter.log said...
**** Orbiter.log
Build Jun 6 2010 [v.100606]
Timer precision: 3.77525e-007 sec
Found 2 joystick(s)
Devices enumerated: 3
Devices accepted: 3
==> RGB Emulation
==> Direct3D HAL
==>...