Ardour/GTK 0.440.0 running with libardour 0.722.1 Loading UI configuration file /usr/local/etc/ardour/ardour_ui.rc Loading system configuration file /usr/local/etc/ardour/ardour_system.rc Loading user configuration file /root/.ardour/ardour.rc MIDI: MTC on port hw:0 MMC on port hw:0 [New Thread 32771 (LWP 11890)] [New Thread 49156 (LWP 11891)] Loading session /home/ardour/sndfiletest/ using snapshot sndfiletest [New Thread 65541 (LWP 11892)] [New Thread 81926 (LWP 11893)] ** CRITICAL **: file gtk-canvas-util.c: line 46 (gtk_canvas_points_new): assertion `num_points > 1' failed. ** CRITICAL **: file gtk-canvas-util.c: line 83 (gtk_canvas_points_free): assertion `points != NULL' failed. Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 16384 (LWP 11887)] 0x08433c4a in Gtkmmext::FastMeter::set(float) (this=0x0, lvl=0) at fastmeter.cc:251 251 current_level = lvl; (gdb) thread apply all bt Thread 7 (Thread 81926 (LWP 11893)): #0 0x406c381a in poll () from /lib/libc.so.6 #1 0x085800a3 in ARDOUR::Session::midi_thread_work() (this=0x88cd5d0) at session_midi.cc:858 #2 0x0858000b in ARDOUR::Session::_midi_thread_work(void*) (arg=0x88cd5d0) at session_midi.cc:832 #3 0x40287e51 in pthread_start_thread () from /lib/libpthread.so.0 #4 0x40287ecf in pthread_start_thread_event () from /lib/libpthread.so.0 #5 0x406cc64a in clone () from /lib/libc.so.6 Thread 6 (Thread 65541 (LWP 11892)): #0 0x4028a5f4 in __pthread_sigsuspend () from /lib/libpthread.so.0 #1 0x4028a3b8 in __pthread_wait_for_restart_signal () from /lib/libpthread.so.0 #2 0x00000020 in ?? () Thread 5 (Thread 49156 (LWP 11891)): #0 0x406c381a in poll () from /lib/libc.so.6 #1 0x40279ffd in jack_client_thread (arg=0x8765118) at client.c:807 #2 0x40287e51 in pthread_start_thread () from /lib/libpthread.so.0 #3 0x40287ecf in pthread_start_thread_event () from /lib/libpthread.so.0 #4 0x406cc64a in clone () from /lib/libc.so.6 Thread 4 (Thread 32771 (LWP 11890)): #0 0x4028a5f4 in __pthread_sigsuspend () from /lib/libpthread.so.0 #1 0x4028a3b8 in __pthread_wait_for_restart_signal () from /lib/libpthread.so.0 #2 0x00000020 in ?? () Thread 3 (Thread 16386 (LWP 11889)): #0 0x4061e65b in sigsuspend () from /lib/libc.so.6 #1 0x4028a9d7 in sigwait () from /lib/libpthread.so.0 #2 0x08357ef4 in signal_thread (arg=0x0) at main.cc:118 #3 0x40287e51 in pthread_start_thread () from /lib/libpthread.so.0 #4 0x40287ecf in pthread_start_thread_event () from /lib/libpthread.so.0 #5 0x406cc64a in clone () from /lib/libc.so.6 ---Type to continue, or q to quit--- Thread 2 (Thread 32769 (LWP 11888)): #0 0x406c381a in poll () from /lib/libc.so.6 #1 0x40287b50 in __pthread_manager () from /lib/libpthread.so.0 #2 0x40287d57 in __pthread_manager_event () from /lib/libpthread.so.0 #3 0x406cc64a in clone () from /lib/libc.so.6 Thread 1 (Thread 16384 (LWP 11887)): #0 0x08433c4a in Gtkmmext::FastMeter::set(float) (this=0x0, lvl=0) at fastmeter.cc:251 #1 0x08313f54 in GainPanMeter::update_meters() (this=0x8a0b120) at gain_pan_meter.cc:249 #2 0x08371e32 in MixerStrip::update() (this=0x8a0ade8) at mixer_strip.cc:804 #3 0x082cb645 in Editor::update_current_screen() (this=0x87ef398) at editor_mixer.cc:160 #4 0x082b28d4 in SigC::ObjectSlot0_::callback(void*) (d=0x42a4d1f4) at object_slot.h:56 #5 0x08208dc5 in SigC::Callback0::call() (this=0x42a4d1f4) at slot.h:260 #6 0x0820de81 in SigC::Signal0 >::emit() (this=0x86f2908) at basic_signal.h:193 #7 0x0820dc59 in SigC::Signal0 >::operator()() (this=0x86f2908) at basic_signal.h:171 #8 0x08216390 in ARDOUR_UI::every_point_zero_one_seconds() (this=0x8700580) at ardour_ui.cc:979 #9 0x08220936 in SigC::ObjectSlot0_::callback(void*) (d=0x8ab85ec) at object_slot.h:56 #10 0x08489c2e in Gtk::TimeoutSig::gtk_callback(void*) (d=0x0) at slot.h:260 #11 0x40185ec4 in g_main_set_poll_func () from /usr/lib/libglib-1.2.so.0 #12 0x4018503d in g_get_current_time () from /usr/lib/libglib-1.2.so.0 #13 0x401854f4 in g_get_current_time () from /usr/lib/libglib-1.2.so.0 #14 0x40185724 in g_main_run () from /usr/lib/libglib-1.2.so.0 #15 0x400abc3f in gtk_main () from /usr/lib/libgtk-1.2.so.0 #16 0x0820ddb6 in Gtk::Main::run() () at main.h:168 #17 0x08445183 in Gtkmmext::UI::run(Receiver&) (this=0x8700580, old_receiver=@0x86f2fe0) at gtk_ui.cc:157 #18 0x08358fd9 in main (argc=1, argv=0xbffffad4) at main.cc:335