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) <0x0018a>
  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) <0x00209>
  at OpenSim.Region.Physics.OdePlugin.OdeScene.Simulate (single) <0x00171>
  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]
        mono [0x8137b32]
        [0xffffe440]
        /usr/local/lib/libode.so(_Z19dCollideHeightfieldP6dxGeomS0_iP12dContactGeomi+0x55d) [0xb49926dd]
        /usr/local/lib/libode.so(dCollide+0x233) [0xb495d083]
        [0xb4149e63]
        [0xb4148f93]
        [0xb204bf2c]
        /usr/local/lib/libode.so(dSpaceCollide2+0x182) [0xb4963572]
        [0xb4146a6f]
        [0xb491bf4a]
        [0xb491b7ea]
        [0xb491b1ba]
        [0xb491a2ac]
        [0xb491a0fc]
        [0xb6d83ae7]
        [0xb6d8381c]
        [0xb6d83776]
        mono(mono_runtime_invoke_array+0x255) [0x80d0645]
        mono [0x80d0abd]
        mono [0x80eae73]
        mono [0x80ec53d]
        mono [0x80ad6f4]
        mono [0x810d762]
        mono [0x812ac45]
        /lib/libpthread.so.0 [0xb7ec1192]
        /lib/libc.so.6(clone+0x5e) [0xb7e2602e]
[CLIENT] [11-24 11:07:37] unhandled packet --- CompletePingCheck ---
-- PingID --
PingID: 0