Something

ODE INTERNAL ERROR 1: assertion "bNormalizationResult" failed in _dNormalize4() [../../include/ode/odemath.h]
Stacktrace:

  at (wrapper managed-to-native) Ode.NET.d.BodySetQuaternion (intptr,Ode.NET.d/Quaternion&) <0x00004>
  at (wrapper managed-to-native) Ode.NET.d.BodySetQuaternion (intptr,Ode.NET.d/Quaternion&) <0xffffffff>
  at OpenSim.Region.Physics.OdePlugin.OdePrim.enableBody () <0x000a6>
  at OpenSim.Region.Physics.OdePlugin.OdePrim.changePhysicsStatus (single) <0x00051>
  at OpenSim.Region.Physics.OdePlugin.OdePrim.ProcessTaints (single) <0x000a1>
  at OpenSim.Region.Physics.OdePlugin.OdeScene.Simulate (single) <0x0033b>
  at OpenSim.Region.Environment.Scenes.InnerScene.UpdatePhysics (double) <0x00031>
  at OpenSim.Region.Environment.Scenes.Scene.Update () <0x001ab>
  at OpenSim.Region.Environment.Scenes.Scene.Heartbeat (object,System.EventArgs) <0x0000b>
  at System.Timers.Timer.Callback (object) <0x002a6>
  at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object (object) <0xffffffff>
  at (wrapper runtime-invoke) System.Threading.WaitCallback.runtime_invoke_void_object (object,intptr,intptr,intptr) <0xffffffff>

Native stacktrace:

        mono [0x816c58f]
        [0xffffe440]
        /lib/libc.so.6(abort+0x101) [0xb7d811e1]
        /usr/local/lib/libode.so(dDebug+0x3a) [0xb453ff9a]
        /usr/local/lib/libode.so(dBodySetQuaternion+0xdd) [0xb453f45d]
        [0xb242e3ec]
        [0xb242e12f]
        [0xb242e02a]
        [0xb24412d2]
        [0xb4400794]
        [0xb43fff9a]
        [0xb43ff08c]
        [0xb43feedc]
        [0xb6d73ae7]
        [0xb6d7381c]
        [0xb6d73776]
        mono(mono_runtime_invoke_array+0x255) [0x80d0645]
        mono [0x80d0abd]
        mono [0x80eae73]
        mono [0x80ec53d]
        mono [0x80ad6f4]
        mono [0x810d762]
        mono [0x812ac45]
        /lib/libpthread.so.0 [0xb7eb4192]
        /lib/libc.so.6(clone+0x5e) [0xb7e1902e]

=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted
apx-osl:/raid/opensim/bin #