Out of curiosity, I just tried to set up a SPAD VII mission in the QMB. The same thing is happening here; at the instant the mission should begin, the sim CTDs. The presumably relevant portion of the logfile for the incident strongly resembles vampire_pilot's:
Mission: QuickQMBPro/WWI_WestFront44_S/WWI_WestFront44_SRedNone00.mis is Playing
INTERNAL ERROR: HierMesh: Can't find chunk 'crank'
INTERNAL ERROR: HierMesh: Can't find chunk 'GearC1_D0'
java.lang.NoSuchFieldError: bChangedPit
at com.maddox.il2.objects.air.CockpitSPAD_7$Interpolater.tick(CockpitSPAD_7.java:25)
at com.maddox.il2.engine.Interpolators.tick(Interpolators.java:222)
at com.maddox.il2.engine.Actor.interpolateTick(Actor.java:375)
at com.maddox.il2.engine.InterpolateAdapter.msgTimeOut(InterpolateAdapter.java:174)
at com.maddox.rts.MsgTimeOut.invokeListener(MsgTimeOut.java:73)
at com.maddox.rts.Message._send(Message.java:1217)
at com.maddox.rts.Message.sendToObject(Message.java:1191)
at com.maddox.rts.Message.sendTo(Message.java:1134)
at com.maddox.rts.Message.trySend(Message.java:1115)
at com.maddox.rts.Time.loopMessages(Time.java:252)
at com.maddox.rts.RTSConf.loopMsgs(RTSConf.java:101)
at com.maddox.il2.game.MainWin3D.loopApp(MainWin3D.java:131)
at com.maddox.il2.game.Main.exec(Main.java:422)
at com.maddox.il2.game.GameWin3D.main(GameWin3D.java:235)
Thanks for looking into this v_p. Not incidentally, the SPAD XIII works fine.