in initialize_manifold_indices at source/blender/blenkernel/intern/subdiv_converter_mesh.c:361
 in init_user_data at source/blender/blenkernel/intern/subdiv_converter_mesh.c:397
 in BKE_subdiv_converter_init_for_mesh at source/blender/blenkernel/intern/subdiv_converter_mesh.c:406
 in BKE_subdiv_update_from_mesh at source/blender/blenkernel/intern/subdiv.c:189
 in subdiv_descriptor_ensure at source/blender/modifiers/intern/MOD_subsurf.c:175
 in modifyMesh at source/blender/modifiers/intern/MOD_subsurf.c:261
 in BKE_modifier_modify_mesh at source/blender/blenkernel/intern/modifier.c:1007
 in mesh_calc_modifiers at source/blender/blenkernel/intern/DerivedMesh.c:1185
 in mesh_build_data at source/blender/blenkernel/intern/DerivedMesh.c:1785
 in makeDerivedMesh at source/blender/blenkernel/intern/DerivedMesh.c:1922
 in BKE_object_handle_data_update at source/blender/blenkernel/intern/object_update.c:192
 in BKE_object_eval_uber_data at source/blender/blenkernel/intern/object_update.c:384
 in decltype(std::__1::forward<void (*&)(Depsgraph*, Scene*, Object*)>(fp)(std::__1::forward<Depsgraph*>(fp0), std::__1::forward<Scene*&>(fp0), std::__1::forward<Object*&>(fp0))) std::__1::__invoke<void (*&)(Depsgraph*, Scene*, Object*), Depsgraph*, Scene*&, Object*&>(void (*&)(Depsgraph*, Scene*, Object*), Depsgraph*&&, Scene*&, Object*&) at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/type_traits:4339
 in std::__1::__bind_return<void (*)(Depsgraph*, Scene*, Object*), std::__1::tuple<std::__1::placeholders::__ph<1>, Scene*, Object*>, std::__1::tuple<Depsgraph*&&>, __is_valid_bind_return<void (*)(Depsgraph*, Scene*, Object*), std::__1::tuple<std::__1::placeholders::__ph<1>, Scene*, Object*>, std::__1::tuple<Depsgraph*&&> >::value>::type std::__1::__apply_functor<void (*)(Depsgraph*, Scene*, Object*), std::__1::tuple<std::__1::placeholders::__ph<1>, Scene*, Object*>, 0ul, 1ul, 2ul, std::__1::tuple<Depsgraph*&&> >(void (*&)(Depsgraph*, Scene*, Object*), std::__1::tuple<std::__1::placeholders::__ph<1>, Scene*, Object*>&, std::__1::__tuple_indices<0ul, 1ul, 2ul>, std::__1::tuple<Depsgraph*&&>&&) at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:2216
 in std::__1::__bind_return<void (*)(Depsgraph*, Scene*, Object*), std::__1::tuple<std::__1::placeholders::__ph<1>, Scene*, Object*>, std::__1::tuple<Depsgraph*&&>, __is_valid_bind_return<void (*)(Depsgraph*, Scene*, Object*), std::__1::tuple<std::__1::placeholders::__ph<1>, Scene*, Object*>, std::__1::tuple<Depsgraph*&&> >::value>::type std::__1::__bind<void (&)(Depsgraph*, Scene*, Object*), std::__1::placeholders::__ph<1> const&, Scene*&, Object*&>::operator()<Depsgraph*>(Depsgraph*&&) at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:2249
 in decltype(std::__1::forward<std::__1::__bind<void (&)(Depsgraph*, Scene*, Object*), std::__1::placeholders::__ph<1> const&, Scene*&, Object*&>&>(fp)(std::__1::forward<Depsgraph*>(fp0))) std::__1::__invoke<std::__1::__bind<void (&)(Depsgraph*, Scene*, Object*), std::__1::placeholders::__ph<1> const&, Scene*&, Object*&>&, Depsgraph*>(std::__1::__bind<void (&)(Depsgraph*, Scene*, Object*), std::__1::placeholders::__ph<1> const&, Scene*&, Object*&>&, Depsgraph*&&) at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/type_traits:4339
 in void std::__1::__invoke_void_return_wrapper<void>::__call<std::__1::__bind<void (&)(Depsgraph*, Scene*, Object*), std::__1::placeholders::__ph<1> const&, Scene*&, Object*&>&, Depsgraph*>(std::__1::__bind<void (&)(Depsgraph*, Scene*, Object*), std::__1::placeholders::__ph<1> const&, Scene*&, Object*&>&, Depsgraph*&&) at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__functional_base:349
 in std::__1::__function::__func<std::__1::__bind<void (&)(Depsgraph*, Scene*, Object*), std::__1::placeholders::__ph<1> const&, Scene*&, Object*&>, std::__1::allocator<std::__1::__bind<void (&)(Depsgraph*, Scene*, Object*), std::__1::placeholders::__ph<1> const&, Scene*&, Object*&> >, void (Depsgraph*)>::operator()(Depsgraph*&&) at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1562
 in std::__1::function<void (Depsgraph*)>::operator()(Depsgraph*) const at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1913
 in blender::deg::(anonymous namespace)::evaluate_node(blender::deg::(anonymous namespace)::DepsgraphEvalState const*, blender::deg::OperationNode*) at source/blender/depsgraph/intern/eval/deg_eval.cc:114
 in blender::deg::(anonymous namespace)::deg_task_run_func(TaskPool*, void*) at source/blender/depsgraph/intern/eval/deg_eval.cc:125
 in Task::operator()() const at source/blender/blenlib/intern/task_pool.cc:120
 in tbb_task_pool_run(TaskPool*, Task&&) at source/blender/blenlib/intern/task_pool.cc:226
 in ::BLI_task_pool_push(TaskPool *, TaskRunFunction, void *, bool, TaskFreeFunction) at source/blender/blenlib/intern/task_pool.cc:484
 in blender::deg::(anonymous namespace)::schedule_node_to_pool(blender::deg::OperationNode*, int, TaskPool*) at source/blender/depsgraph/intern/eval/deg_eval.cc:74
 in void blender::deg::(anonymous namespace)::schedule_node<void (blender::deg::OperationNode*, int, TaskPool*), TaskPool*>(blender::deg::(anonymous namespace)::DepsgraphEvalState*, blender::deg::OperationNode*, bool, void (*)(blender::deg::OperationNode*, int, TaskPool*), TaskPool*) at source/blender/depsgraph/intern/eval/deg_eval.cc:274
 in void blender::deg::(anonymous namespace)::schedule_children<void (blender::deg::OperationNode*, int, TaskPool*), TaskPool*>(blender::deg::(anonymous namespace)::DepsgraphEvalState*, blender::deg::OperationNode*, void (*)(blender::deg::OperationNode*, int, TaskPool*), TaskPool*) at source/blender/depsgraph/intern/eval/deg_eval.cc:302
 in void blender::deg::(anonymous namespace)::schedule_node<void (blender::deg::OperationNode*, int, TaskPool*), TaskPool*>(blender::deg::(anonymous namespace)::DepsgraphEvalState*, blender::deg::OperationNode*, bool, void (*)(blender::deg::OperationNode*, int, TaskPool*), TaskPool*) at source/blender/depsgraph/intern/eval/deg_eval.cc:270
 in void blender::deg::(anonymous namespace)::schedule_children<void (blender::deg::OperationNode*, int, TaskPool*), TaskPool*>(blender::deg::(anonymous namespace)::DepsgraphEvalState*, blender::deg::OperationNode*, void (*)(blender::deg::OperationNode*, int, TaskPool*), TaskPool*) at source/blender/depsgraph/intern/eval/deg_eval.cc:302
 in blender::deg::(anonymous namespace)::deg_task_run_func(TaskPool*, void*) at source/blender/depsgraph/intern/eval/deg_eval.cc:128
 in Task::operator()() const at source/blender/blenlib/intern/task_pool.cc:120
 in tbb_task_pool_run(TaskPool*, Task&&) at source/blender/blenlib/intern/task_pool.cc:226
 in tbb_task_pool_work_and_wait(TaskPool*) at source/blender/blenlib/intern/task_pool.cc:239
 in ::BLI_task_pool_work_and_wait(TaskPool *) at source/blender/blenlib/intern/task_pool.cc:499
 in blender::deg::deg_evaluate_on_refresh(blender::deg::Depsgraph*) at source/blender/depsgraph/intern/eval/deg_eval.cc:398
 in ::DEG_evaluate_on_refresh(Main *, Depsgraph *) at source/blender/depsgraph/intern/depsgraph_eval.cc:63
 in scene_graph_update_tagged at source/blender/blenkernel/intern/scene.c:1496
 in BKE_scene_graph_update_tagged at source/blender/blenkernel/intern/scene.c:1535
 in wm_event_do_depsgraph at source/blender/windowmanager/intern/wm_event_system.c:359
 in wm_file_read_post at source/blender/windowmanager/intern/wm_files.c:630
 in WM_file_read at source/blender/windowmanager/intern/wm_files.c:754
 in wm_file_read_opwrap at source/blender/windowmanager/intern/wm_files.c:2173
 in wm_open_mainfile__open at source/blender/windowmanager/intern/wm_files.c:2313
 in operator_state_dispatch at source/blender/windowmanager/intern/wm_files.c:2209
 in wm_open_mainfile_dispatch at source/blender/windowmanager/intern/wm_files.c:2337
 in wm_open_mainfile__discard_changes at source/blender/windowmanager/intern/wm_files.c:2254
 in operator_state_dispatch at source/blender/windowmanager/intern/wm_files.c:2209
 in wm_open_mainfile_dispatch at source/blender/windowmanager/intern/wm_files.c:2337
 in wm_open_mainfile_invoke at source/blender/windowmanager/intern/wm_files.c:2342
 in wm_operator_invoke at source/blender/windowmanager/intern/wm_event_system.c:1296
 in wm_operator_call_internal at source/blender/windowmanager/intern/wm_event_system.c:1544
 in WM_operator_name_call_ptr at source/blender/windowmanager/intern/wm_event_system.c:1558
 in ui_apply_but_funcs_after at source/blender/editors/interface/interface_handlers.c:904
 in ui_popup_handler at source/blender/editors/interface/interface_handlers.c:10913
 in wm_handler_ui_call at source/blender/windowmanager/intern/wm_event_system.c:634
 in wm_handlers_do_intern at source/blender/windowmanager/intern/wm_event_system.c:2751
 in wm_handlers_do at source/blender/windowmanager/intern/wm_event_system.c:2862
 in wm_event_do_handlers at source/blender/windowmanager/intern/wm_event_system.c:3287
 in WM_main at source/blender/windowmanager/intern/wm.c:475
 in main at source/creator/creator.c:546