Load another mission

When I load a mission, then exit the mission and load another mission, nothing happens. The log looks like:

*** LOADING MISSION: starter.fps/data/missions/stronghold.mis
*** Stage 1 load
*** Stage 2 load
Executing starter.fps/data/missions/stronghold.mis.
starter.fps/data/shapes/M1A1.dts - Collision mesh names should start with Col or LOSCol, encountered 'Cube' in detail level 1
*** Mission loaded
starter.fps/server/scripts/player.cs (693): Unknown command setActionThread.
  Object DemoPlayer(78) DemoPlayer -> armor -> PlayerData -> ShapeBaseData -> GameBaseData -> SimDataBlock -> SimObject
Connect request from: IP:0.0.0.0:0
Connection established 3141
CADD: 3142 local
*** Sending mission load to client: starter.fps/data/missions/stronghold.mis
keyboard0 input device unacquired.
DirectInput deactivated.
Exporting client prefs
Exporting client config
Exporting server prefs
Exporting client prefs
Exporting server prefs
CDROP: 3142 IP:0.0.0.0:0
Shutting down the OpenGL display device...
Making the GL rendering context not current...
Deleting the GL rendering context...
Releasing the device context...