Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1211701552 (LWP 1357)] 0xb014865d in csGenericRenderStep::Perform (this=0xb1c7c3d8, rview=0xaa1818e4, sector=0xa93e6a10, light=0x0, stacks=0xb7c59b9c) at plugins/engine/renderloop/stdsteps/generic.cpp:572 572 iMaterial* hdl = mesh->material->GetMaterial (); (gdb) bt #0 0xb014865d in csGenericRenderStep::Perform (this=0xb1c7c3d8, rview=0xaa1818e4, sector=0xa93e6a10, light=0x0, stacks=0xb7c59b9c) at plugins/engine/renderloop/stdsteps/generic.cpp:572 #1 0xb01454df in csGenericRenderStep::Perform (this=0xb1c7c3d8, rview=0xaa1818e4, sector=0xa93e6a10, stacks=0xb7c59b9c) at plugins/engine/renderloop/stdsteps/generic.cpp:308 #2 0xb732ffc5 in csRenderLoop::Draw (this=0xb0568808, rview=0xaa1818e4, s=0xa93e6a10, mesh=0x0) at plugins/engine/3d/renderloop.cpp:84 #3 0xb7338f8b in csEngine::Draw (this=0xb7c66960, c=0xb00b288c, view=0xaa174904, mesh=0x0) at plugins/engine/3d/engine.cpp:1506 #4 0x08113722 in csView::Draw (this=0xb00a5218, mesh=0x0) at libs/cstool/csview.cpp:160 #5 0x08091f9c in psCamera::Draw (this=0x947c340) at src/client/pscamera.cpp:702 #6 0x08077f44 in psEngine::HandleEvent (this=0x8815918, ev=@0xb0627fd4) at src/client/psengine.cpp:784 #7 0x08081f2b in psEngine::EventHandler::HandleEvent (this=0xb0573688, ev=@0xb0627fd4) at src/client/psengine.h:221 #8 0x081917d8 in csEventTree::Dispatch (this=0x8e6fd88, e=@0xb0627fd4) at libs/csutil/cssubscription.cpp:576 #9 0x08191c10 in csEventTree::Notify (this=0x8e6fd88) at libs/csutil/cssubscription.cpp:546 #10 0x0814e232 in csEventQueue::iTypedFrameEventDispatcher::HandleEvent ( ---Type to continue, or q to quit--- this=0xb7c59e1c) at libs/csutil/cseventq.cpp:277 #11 0x081917d8 in csEventTree::Dispatch (this=0x8518b90, e=@0xb7f0a15c) at libs/csutil/cssubscription.cpp:576 #12 0x08191c10 in csEventTree::Notify (this=0x8518b90) at libs/csutil/cssubscription.cpp:546 #13 0x0814a528 in csEventQueue::Process (this=0xb7c5c930) at libs/csutil/cseventq.cpp:277 #14 0x081069fc in csDefaultRunLoop (r=0xb7c5c83c) at libs/csutil/generic/runloop.cpp:91 #15 0x0807b008 in main (argc=Cannot access memory at address 0x5d ) at src/client/psengine.cpp:1876 #16 0xb7c85ebc in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6 #17 0x0804b711 in _start ()