Mine

ODE INTERNAL ERROR 1: assertion "bNormalizationResult" failed in _dNormalize3() [../../include/ode/odemath.h]
Stacktrace:

  at (wrapper managed-to-native) Ode.NET.d.Collide (intptr,intptr,int,Ode.NET.d/ContactGeom[],int) <0x00004>
  at (wrapper managed-to-native) Ode.NET.d.Collide (intptr,intptr,int,Ode.NET.d/ContactGeom[],int) <0xffffffff>
  at OpenSim.Region.Physics.OdePlugin.OdeScene.near (intptr,intptr,intptr) <0x00147>
  at (wrapper native-to-managed) OpenSim.Region.Physics.OdePlugin.OdeScene.near (intptr,intptr,intptr) <0xffffffff>
  at (wrapper managed-to-native) Ode.NET.d.SpaceCollide2 (intptr,intptr,intptr,Ode.NET.d/NearCallback) <0x00004>
  at (wrapper managed-to-native) Ode.NET.d.SpaceCollide2 (intptr,intptr,intptr,Ode.NET.d/NearCallback) <0xffffffff>
  at OpenSim.Region.Physics.OdePlugin.OdeScene.collision_optimized (single) <0x002be>
  at OpenSim.Region.Physics.OdePlugin.OdeScene.Simulate (single) <0x0080d>
  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 [0x81ab4d7]
        mono [0x818e960]
        [0xffffe440]
        /lib/i686/cmov/libc.so.6(abort+0x101) [0xb7d3f181]
        ./libode.so(dDebug+0x3c) [0xb461535c]
        ./libode.so(_Z11dCollideTTLP6dxGeomS0_iP12dContactGeomi+0x2c3a) [0xb46528da]
        ./libode.so(dCollide+0x149) [0xb46161b9]
        [0xb0fa585b]
        [0xb0fa51d0]
        [0xb380f4c4]
        ./libode.so [0xb461f129]
        ./libode.so(_ZN11dxHashSpace8collide2EPvP6dxGeomPFvS0_S2_S2_E+0x95) [0xb4620725]
        ./libode.so(dSpaceCollide2+0x12b) [0xb46210cb]
        [0xb0fa4fc7]
        [0xb45eeaaf]
        [0xb45edc26]
        [0xb45ed1b2]
        [0xb45ec0b4]
        [0xb45ebf04]
        [0xb6b9412f]
        [0xb6b93e64]
        [0xb6b93dbe]
        mono [0x818e75c]
        mono(mono_runtime_invoke+0x29) [0x80b8aa0]
        mono(mono_runtime_invoke_array+0x50b) [0x80ba4be]
        mono [0x80bc65f]
        mono [0x80f5cca]
        mono [0x80f6b28]
        mono [0x80efc24]
        mono [0x8149305]
        mono [0x8162ee8]
        /lib/i686/cmov/libpthread.so.0 [0xb7e8546b]
        /lib/i686/cmov/libc.so.6(clone+0x5e) [0xb7de672e]