(gdb) backtrace
#0  0x00002b2d29bec0b5 in raise () from /lib/libc.so.6
#1  0x00002b2d29bed560 in abort () from /lib/libc.so.6
#2  0x00002b2d2b4d8f69 in ?? () from /usr/lib/libGLcore.so.1
#3  0x00002b2d2b71f5e9 in ?? () from /usr/lib/libGLcore.so.1
#4  0x00002b2d2b717589 in ?? () from /usr/lib/libGLcore.so.1
#5  0x00002b2d2b55754d in ?? () from /usr/lib/libGLcore.so.1
#6  0x00002b2d2b560a56 in ?? () from /usr/lib/libGLcore.so.1
#7  0x00002b2d2b284901 in ?? () from /usr/lib/libGLcore.so.1
#8  0x00002b2d2abab529 in CS::Plugin::gl3d::csGLGraphics3D::DrawMesh (
    this=0x2b2d289cbe78, mymesh=0x2aaabcd177d0, modes=<value optimized out>,
    stacks=<value optimized out>)
    at plugins/video/render3d/opengl/gl_render3d.cpp:1843
#9  0x00002aaab0ee552b in csGenericRenderStep::RenderMeshes (
    this=0x2aaab88d01f8, rview=0x2aaab4e9cc20, g3d=0x2b2d289cbea0,
    Pusher=<value optimized out>, ticket=1,
    meshContexts=<value optimized out>, meshes=0x2aaabd3a6bc8, num=23,
    stacks=0x2b2d289b8750)
    at plugins/engine/renderloop/stdsteps/generic.cpp:290
#10 0x00002aaab0ee2117 in csGenericRenderStep::Perform (this=0x2aaab88d01f8,
    rview=0x2aaab4e9cc20, sector=<value optimized out>, light=0x0,
    stacks=0x2b2d289b8750)
    at plugins/engine/renderloop/stdsteps/generic.cpp:608
#11 0x00002aaaadc3d19f in csRenderLoop::Draw (this=0x2aaab88ce868,
---Type <return> to continue, or q <return> to quit---
    rview=0x2aaab4e9cc20, s=0x2aaab085d168, mesh=0x0)
    at plugins/engine/3d/renderloop.cpp:84
#12 0x00002aaaadc23ae2 in csEngine::Draw (this=0x2b2d289d5c30,
    c=0x2aaab1276d50, view=0x2b2d289d5ca0, mesh=0x0)
    at plugins/engine/3d/engine.cpp:1506
#13 0x0000000000468178 in psCamera::Draw (this=0x1326820)
    at src/client/pscamera.cpp:712
#14 0x00000000004146be in psEngine::HandleEvent (this=0xc7c9f0,
    ev=<value optimized out>) at src/client/psengine.cpp:813
#15 0x000000000041a17d in psEngine::EventHandler::HandleEvent (
    this=<value optimized out>, ev=@0x364a) at src/client/psengine.h:224
#16 0x00000000005087c7 in csEventTree::Dispatch (this=0x12e2bd0,
    e=@0x2aaab07f9ca0) at libs/csutil/cssubscription.cpp:576
#17 0x00000000005089f8 in csEventTree::Notify (this=0x12e2bd0)
    at libs/csutil/cssubscription.cpp:546
#18 0x00000000004f900c in csEventQueue::iTypedFrameEventDispatcher::HandleEvent
    (this=0x8) at libs/csutil/cseventq.cpp:277
#19 0x00000000005087c7 in csEventTree::Dispatch (this=0xae1260,
    e=@0x2b2d2898ce18) at libs/csutil/cssubscription.cpp:576
#20 0x00000000005089f8 in csEventTree::Notify (this=0xae1260)
    at libs/csutil/cssubscription.cpp:546
#21 0x00000000004f4b35 in csEventQueue::Process (this=0x2b2d289bd078)
    at libs/csutil/cseventq.cpp:277
---Type <return> to continue, or q <return> to quit---
#22 0x00000000004b8873 in csDefaultRunLoop (r=0x21)
    at libs/csutil/generic/runloop.cpp:91
#23 0x00000000004101d9 in main (argc=<value optimized out>,
    argv=<value optimized out>) at src/client/psengine.cpp:1903
#24 0x00002b2d29bd9164 in __libc_start_main () from /lib/libc.so.6
#25 0x0000000000404cb9 in _start ()
(gdb) 
(gdb) bt full
#0  0x00002b2d29bec0b5 in raise () from /lib/libc.so.6
No symbol table info available.
#1  0x00002b2d29bed560 in abort () from /lib/libc.so.6
No symbol table info available.
#2  0x00002b2d2b4d8f69 in ?? () from /usr/lib/libGLcore.so.1
No symbol table info available.
#3  0x00002b2d2b71f5e9 in ?? () from /usr/lib/libGLcore.so.1
No symbol table info available.
#4  0x00002b2d2b717589 in ?? () from /usr/lib/libGLcore.so.1
No symbol table info available.
#5  0x00002b2d2b55754d in ?? () from /usr/lib/libGLcore.so.1
No symbol table info available.
#6  0x00002b2d2b560a56 in ?? () from /usr/lib/libGLcore.so.1
No symbol table info available.
#7  0x00002b2d2b284901 in ?? () from /usr/lib/libGLcore.so.1
No symbol table info available.
#8  0x00002b2d2abab529 in CS::Plugin::gl3d::csGLGraphics3D::DrawMesh (
    this=0x2b2d289cbe78, mymesh=0x2aaabcd177d0, modes=<value optimized out>,
    stacks=<value optimized out>)
    at plugins/video/render3d/opengl/gl_render3d.cpp:1843
        alpha = <value optimized out>
        num_tri = 674
        iIndexbuf = (iRenderBuffer *) 0x2aaabb933048
---Type <return> to continue, or q <return> to quit---
        indexCompsBytes = 2
        primitivetype = 5
        clip_mask = <value optimized out>
        clip_value = <value optimized out>
        mirrorflag = <value optimized out>
        cullFace = 1028
        mixmode = <value optimized out>
        compType = 5123
        bufData = (void *) 0x2aaabb933098
#9  0x00002aaab0ee552b in csGenericRenderStep::RenderMeshes (
    this=0x2aaab88d01f8, rview=0x2aaab4e9cc20, g3d=0x2b2d289cbea0,
    Pusher=<value optimized out>, ticket=1,
    meshContexts=<value optimized out>, meshes=0x2aaabd3a6bc8, num=23,
    stacks=0x2b2d289b8750)
    at plugins/engine/renderloop/stdsteps/generic.cpp:290
        mesh = (csRenderMesh *) 0x2aaabcd177d0
        meshContext = (class iShaderVariableContext *) 0x2aaabae9b360
        modes = {z_buf_mode = CS_ZBUF_USE, mixmode = 0, flipCulling = false,
  alphaType = csAlphaMode::alphaSmooth, buffers = {obj = 0xe566de0}}
        j = 1
        p = 0
        noclip = false
        old_cliptype = 1
---Type <return> to continue, or q <return> to quit---
        numPasses = 1
#10 0x00002aaab0ee2117 in csGenericRenderStep::Perform (this=0x2aaab88d01f8,
    rview=0x2aaab4e9cc20, sector=<value optimized out>, light=0x0,
    stacks=0x2b2d289b8750)
    at plugins/engine/renderloop/stdsteps/generic.cpp:608
        hdl = <value optimized out>
        meshShader = (class iShader *) 0x0
        newTicket = 18446744073709551615
        mesh = (csRenderMesh *) 0x2aaab45046b0
        n = 139
        g3d = (class iGraphics3D *) 0x2b2d289cbea0
        meshlist = <value optimized out>
        num = 335
        sameShaderMeshes = (csRenderMesh **) 0x2aaabd3a6828
        sameShaderMeshInfo = (meshInfo *) 0x2aaabd3b1f98
        lastidx = 116
        numSSM = 23
        shader = (class iShader *) 0x2aaab88da6c8
        currentTicket = 1
        engine = <value optimized out>
        ambient = {red = 0.0980392247, green = 0.0980392247,
  blue = 0.117647067}
        pusher = {sectorContext = 0x2aaab085d180, light = 0x0,
---Type <return> to continue, or q <return> to quit---
  mesh = 0x2aaab45046b0, meshContext = 0x2aaab98fcf28, shader = 0x2aaab88da6c8}
        camt = (
    const csReversibleTransform &) @0x2aaab1276cc8: {<csTransform> = {
    _vptr.csTransform = 0x2aaaadf40ed8, m_o2t = {m11 = -0.903991997, m12 = 0,
      m13 = -0.427549392, m21 = 0.126349449, m22 = 0.955336452,
      m23 = -0.267147839, m31 = 0.408453524, m32 = -0.295520127,
      m33 = -0.863616526}, v_o2t = {{{x = 159.024628, y = 63.2129898,
          z = 45.3120842}, m = {159.024628, 63.2129898, 45.3120842}}}},
  m_t2o = {m11 = -0.903991997, m12 = 0.126349449, m13 = 0.408453524, m21 = 0,
    m22 = 0.955336452, m23 = -0.295520127, m31 = -0.427549392,
    m32 = -0.267147839, m33 = -0.863616526}}
        cutoff_distance = 0
        light_center = {{{x = 0.832050323, y = -0, z = -0.554700255}, m = {
      0.832050323, -0, -0.554700255}}}
#11 0x00002aaaadc3d19f in csRenderLoop::Draw (this=0x2aaab88ce868,
    rview=0x2aaab4e9cc20, s=0x2aaab085d168, mesh=0x0)
    at plugins/engine/3d/renderloop.cpp:84
        oldClipType = 1
        cs = (class csSector *) 0x2aaab085d0f8
        i = 1
        lights = <value optimized out>
#12 0x00002aaaadc23ae2 in csEngine::Draw (this=0x2b2d289d5c30,
    c=0x2aaab1276d50, view=0x2b2d289d5ca0, mesh=0x0)
---Type <return> to continue, or q <return> to quit---
    at plugins/engine/3d/engine.cpp:1506
        rl = (class iRenderLoop *) 0x364a
        s = (class iSector *) 0x2aaab085d168
#13 0x0000000000468178 in psCamera::Draw (this=0x1326820)
    at src/client/pscamera.cpp:712
        elapsedTicks = <value optimized out>
        elapsedSeconds = <value optimized out>
        actorPos = {{{x = 160.960007, y = 60.2353897, z = 41.2200012}, m = {
      160.960007, 60.2353897, 41.2200012}}}
        actorYRot = -0.441781044
        actorSector = (class iSector *) 0x2aaab085d168
        deltaIdeal = {worldPos = {{{x = 0, y = 0, z = 0}, m = {0, 0, 0}}},
  worldTar = {{{x = 0, y = 0, z = 0}, m = {0, 0, 0}}}, worldUp = {{{x = 0,
        y = 0, z = 0}, m = {0, 0, 0}}}, pitch = 1.53049818e-41,
  yaw = -2.22970808e-11, roll = 1.53049818e-41, defaultPitch = 0,
  defaultYaw = 0, defaultRoll = -2.22924196e-11, distance = 1.53049818e-41,
  minDistance = 1, maxDistance = -0, turnSpeed = -1.48134802e-08,
  springCoef = 1.53049818e-41, InertialDampeningCoef = 2.80259693e-45,
  springLength = 0, swingCoef = -1.10114347e-37}
        actorEye = {{{x = 161.066895, y = 61.7353897, z = 40.9940033}, m = {
      161.066895, 61.7353897, 40.9940033}}}
#14 0x00000000004146be in psEngine::HandleEvent (this=0xc7c9f0,
    ev=<value optimized out>) at src/client/psengine.cpp:813
---Type <return> to continue, or q <return> to quit---
        drawFrame = true
        __FUNCTION__ = "HandleEvent"
        count = 470
#15 0x000000000041a17d in psEngine::EventHandler::HandleEvent (
    this=<value optimized out>, ev=@0x364a) at src/client/psengine.h:224
No locals.
#16 0x00000000005087c7 in csEventTree::Dispatch (this=0x12e2bd0,
    e=@0x2aaab07f9ca0) at libs/csutil/cssubscription.cpp:576
        h = (iEventHandler *) 0x364a
        it = {handler_reg = {obj = 0x2b2d289b2cc8}, record = 0x12c3130,
  baseevent = 5, mode = csEventTree::SubscriberIterator::SI_LIST,
  qit = 0x128ce970}
#17 0x00000000005089f8 in csEventTree::Notify (this=0x12e2bd0)
    at libs/csutil/cssubscription.cpp:546
No locals.
#18 0x00000000004f900c in csEventQueue::iTypedFrameEventDispatcher::HandleEvent
    (this=0x8) at libs/csutil/cseventq.cpp:277
No locals.
#19 0x00000000005087c7 in csEventTree::Dispatch (this=0xae1260,
    e=@0x2b2d2898ce18) at libs/csutil/cssubscription.cpp:576
        h = (iEventHandler *) 0x364a
        it = {handler_reg = {obj = 0x2b2d289b2cc8}, record = 0xaee1f0,
  baseevent = 1, mode = csEventTree::SubscriberIterator::SI_LIST,
---Type <return> to continue, or q <return> to quit---
  qit = 0x110063a0}
#20 0x00000000005089f8 in csEventTree::Notify (this=0xae1260)
    at libs/csutil/cssubscription.cpp:546
No locals.
#21 0x00000000004f4b35 in csEventQueue::Process (this=0x2b2d289bd078)
    at libs/csutil/cseventq.cpp:277
No locals.
#22 0x00000000004b8873 in csDefaultRunLoop (r=0x21)
    at libs/csutil/generic/runloop.cpp:91
No locals.
#23 0x00000000004101d9 in main (argc=<value optimized out>,
    argv=<value optimized out>) at src/client/psengine.cpp:1903
        CSSetup = (psCSSetup *) 0xae0f70
        object_reg = (class iObjectRegistry *) 0x2b2d289be948
        __FUNCTION__ = "main"
#24 0x00002b2d29bd9164 in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#25 0x0000000000404cb9 in _start ()
No symbol table info available.
(gdb)