(gdb) bt
#0 0x90cf1a49 in _dispatch_get_kq_init ()
#1 0x90cf4a6f in dispatch_once_f ()
#2 0x90cf20da in _dispatch_update_kq ()
#3 0x90cf5784 in _dispatch_port_set_init ()
#4 0x90cf4a6f in dispatch_once_f ()
#5 0x90cf767a in _dispatch_mach_notify_source_init ()
#6 0x90cf4a6f in dispatch_once_f ()
#7 0x90cf0da6 in dispatch_source_type_mach_send_init ()
#8 0x90cf75fe in dispatch_source_create ()
#9 0x986067e6 in connectToCoreServicesD ()
#10 0x9860671b in getStatus ()
#11 0x98611bc2 in getSystemSession ()
#12 0x9862ae96 in scCreateSystemCacheable ()
#13 0x9862ae69 in _CLV_GetCacheableOnce ()
#14 0x9348c487 in pthread_once ()
#15 0x9862ace2 in _standalone_CopyCheckFixForBundleID ()
#16 0x9861e14b in GetBugsForOurBundleIDFromCoreservicesd ()
#17 0x9861ddcf in _CSCheckFix ()
#18 0x998708ce in _CGSDisplayInitialize ()
#19 0x998704f6 in cg_setup ()
#20 0x9348c487 in pthread_once ()
#21 0x998704bf in CGSInitialize ()
#22 0x998f555a in CGSMainDisplayID ()
#23 0x06288b86 in osxGraphicsPipe::osxGraphicsPipe ()
#24 0x0628ac6c in osxGraphicsPipe::pipe_constructor ()
#25 0x019a7fc3 in GraphicsPipeSelection::make_default_pipe ()
#26 0x01a10090 in Dtool_GraphicsPipeSelection_make_default_pipe_624 ()
#27 0x000e6fa0 in PyCFunction_Call ()
#28 0x0013494d in PyEval_EvalFrameEx ()
#29 0x00137310 in PyEval_EvalCodeEx ()
#30 0x001374be in PyEval_EvalCode ()
#31 0x001349e5 in PyEval_EvalFrameEx ()
#32 0x00137310 in PyEval_EvalCodeEx ()
#33 0x001374be in PyEval_EvalCode ()
#34 0x001349e5 in PyEval_EvalFrameEx ()
#35 0x00137310 in PyEval_EvalCodeEx ()
#36 0x001374be in PyEval_EvalCode ()
#37 0x001349e5 in PyEval_EvalFrameEx ()
#38 0x00137310 in PyEval_EvalCodeEx ()
#39 0x000d646a in PyClassMethod_New ()
#40 0x000b4c39 in PyObject_Call ()
#41 0x0013509b in PyEval_EvalFrameEx ()
#42 0x00137310 in PyEval_EvalCodeEx ()
#43 0x000d646a in PyClassMethod_New ()
#44 0x000b4c39 in PyObject_Call ()
#45 0x0013509b in PyEval_EvalFrameEx ()
#46 0x00137310 in PyEval_EvalCodeEx ()
#47 0x001374be in PyEval_EvalCode ()
#48 0x001349e5 in PyEval_EvalFrameEx ()
#49 0x00137310 in PyEval_EvalCodeEx ()
#50 0x000d646a in PyClassMethod_New ()
#51 0x000b4c39 in PyObject_Call ()
#52 0x000c3845 in PyInstance_New ()
#53 0x000b4c39 in PyObject_Call ()
#54 0x00130e05 in PyEval_CallObjectWithKeywords ()
#55 0x000c03e6 in PyInstance_New ()
#56 0x000b4c39 in PyObject_Call ()
#57 0x00134b34 in PyEval_EvalFrameEx ()
#58 0x00137310 in PyEval_EvalCodeEx ()
#59 0x000d646a in PyClassMethod_New ()
#60 0x000b4c39 in PyObject_Call ()
#61 0x0013509b in PyEval_EvalFrameEx ()
#62 0x00137445 in PyEval_EvalCode ()
#63 0x001349e5 in PyEval_EvalFrameEx ()
#64 0x00137445 in PyEval_EvalCode ()
#65 0x001349e5 in PyEval_EvalFrameEx ()
#66 0x00137310 in PyEval_EvalCodeEx ()
#67 0x000d646a in PyClassMethod_New ()
#68 0x000b4c39 in PyObject_Call ()
#69 0x000c3845 in PyInstance_New ()
#70 0x000b4c39 in PyObject_Call ()
#71 0x000ff869 in _PyObject_SlotCompare ()
#72 0x000f9de3 in PyType_Modified ()
#73 0x000b4c39 in PyObject_Call ()
#74 0x00134b34 in PyEval_EvalFrameEx ()
#75 0x00137445 in PyEval_EvalCode ()
#76 0x001349e5 in PyEval_EvalFrameEx ()
#77 0x00137445 in PyEval_EvalCode ()
#78 0x001349e5 in PyEval_EvalFrameEx ()
#79 0x00137310 in PyEval_EvalCodeEx ()
#80 0x000d646a in PyClassMethod_New ()
#81 0x000b4c39 in PyObject_Call ()
#82 0x0013509b in PyEval_EvalFrameEx ()
#83 0x00137310 in PyEval_EvalCodeEx ()
#84 0x000d646a in PyClassMethod_New ()
#85 0x000b4c39 in PyObject_Call ()
#86 0x000c3845 in PyInstance_New ()
#87 0x000b4c39 in PyObject_Call ()
#88 0x000fef60 in _PyObject_SlotCompare ()
#89 0x000b4c39 in PyObject_Call ()
#90 0x00134b34 in PyEval_EvalFrameEx ()
#91 0x00137310 in PyEval_EvalCodeEx ()
#92 0x001374be in PyEval_EvalCode ()
#93 0x001349e5 in PyEval_EvalFrameEx ()
#94 0x00137310 in PyEval_EvalCodeEx ()
#95 0x000d646a in PyClassMethod_New ()
#96 0x000b4c39 in PyObject_Call ()
#97 0x0013509b in PyEval_EvalFrameEx ()
#98 0x00137310 in PyEval_EvalCodeEx ()
#99 0x000d646a in PyClassMethod_New ()
#100 0x000b4c39 in PyObject_Call ()
#101 0x000c3845 in PyInstance_New ()
#102 0x000b4c39 in PyObject_Call ()
#103 0x000fef60 in _PyObject_SlotCompare ()
#104 0x000b4c39 in PyObject_Call ()
#105 0x00134b34 in PyEval_EvalFrameEx ()
#106 0x00137445 in PyEval_EvalCode ()
#107 0x001349e5 in PyEval_EvalFrameEx ()
#108 0x00137310 in PyEval_EvalCodeEx ()
#109 0x001374be in PyEval_EvalCode ()
#110 0x001349e5 in PyEval_EvalFrameEx ()
#111 0x00137310 in PyEval_EvalCodeEx ()
#112 0x001374be in PyEval_EvalCode ()
#113 0x001349e5 in PyEval_EvalFrameEx ()
#114 0x00137310 in PyEval_EvalCodeEx ()
#115 0x000d646a in PyClassMethod_New ()
#116 0x000b4c39 in PyObject_Call ()
#117 0x0013509b in PyEval_EvalFrameEx ()
#118 0x00137310 in PyEval_EvalCodeEx ()
#119 0x000d646a in PyClassMethod_New ()
#120 0x000b4c39 in PyObject_Call ()
#121 0x0013509b in PyEval_EvalFrameEx ()
#122 0x00137310 in PyEval_EvalCodeEx ()
#123 0x001374be in PyEval_EvalCode ()
#124 0x001349e5 in PyEval_EvalFrameEx ()
#125 0x00137445 in PyEval_EvalCode ()
#126 0x001349e5 in PyEval_EvalFrameEx ()
#127 0x00137445 in PyEval_EvalCode ()
#128 0x001349e5 in PyEval_EvalFrameEx ()
#129 0x00137310 in PyEval_EvalCodeEx ()
#130 0x001374be in PyEval_EvalCode ()
#131 0x001349e5 in PyEval_EvalFrameEx ()
#132 0x00137310 in PyEval_EvalCodeEx ()
#133 0x00137394 in PyEval_EvalCode ()
#134 0x0014d731 in Py_CompileString ()
#135 0x0014d7e6 in PyRun_FileExFlags ()
#136 0x0014ea61 in PyRun_SimpleFileExFlags ()
#137 0x0014f015 in PyRun_AnyFileExFlags ()
#138 0x0015fe38 in Py_Main ()