. Thread 4 (Thread 0x7f642bfff700 (LWP 8870)): #0 0x00007f643ca633cd in poll () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007f643b712394 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007f643b7127fa in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007f6437165646 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 No symbol table info available. #4 0x00007f643b736c25 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #5 0x00007f643cd45f8e in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #6 0x00007f643ca6fe1d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. . Thread 3 (Thread 0x7f6420b06700 (LWP 9857)): #0 0x00007f643ca633cd in poll () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007f643b712394 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007f643b71249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007f643b7124e9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #4 0x00007f643b736c25 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #5 0x00007f643cd45f8e in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #6 0x00007f643ca6fe1d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. . Thread 2 (Thread 0x7f6430c03700 (LWP 8869)): #0 0x00007f643ca633cd in poll () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007f643b712394 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007f643b71249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007f6430c0aa9d in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so No symbol table info available. #4 0x00007f643b736c25 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #5 0x00007f643cd45f8e in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #6 0x00007f643ca6fe1d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. . Thread 1 (Thread 0x7f64409fca00 (LWP 8862)): #0 0x00007f643f2099a1 in avio_close () from /usr/lib/x86_64-linux-gnu/libavformat.so.53 No symbol table info available. #1 0x0000000000466fd0 in ?? () No symbol table info available. #2 0x0000000000467040 in ?? () No symbol table info available. #3 0x00000000004f7837 in ?? () No symbol table info available. #4 0x00000000004f9c17 in ?? () No symbol table info available. #5 0x00000000004fc25f in ?? () No symbol table info available. #6 0x00000000004fca90 in ?? () No symbol table info available. #7 0x0000000000502993 in ?? () No symbol table info available. #8 0x00007f643f5c4a46 in wxEvtHandler::ProcessEventIfMatches(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0 No symbol table info available. #9 0x00007f643f5c4bb4 in wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0 No symbol table info available. #10 0x00007f643f5c4ed7 in wxEvtHandler::ProcessEvent(wxEvent&) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0 No symbol table info available. #11 0x00007f643fff76b9 in wxWindowBase::TryParent(wxEvent&) () from /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-2.8.so.0 No symbol table info available. #12 0x00007f643fff1176 in wxToolBarBase::OnLeftClick(int, bool) () from /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-2.8.so.0 No symbol table info available. #13 0x00007f643ff853d0 in ?? () from /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-2.8.so.0 No symbol table info available. #14 0x00007f643b9da497 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #15 0x00007f643b9f42bc in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #16 0x00007f643b9f4b92 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #17 0x00007f643c3c6625 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 No symbol table info available. #18 0x00007f643b9da268 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #19 0x00007f643b9ebebf in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #20 0x00007f643b9f48ba in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #21 0x00007f643b9f4b92 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #22 0x00007f643c3c5569 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 No symbol table info available. #23 0x00007f643c467645 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 No symbol table info available. #24 0x00007f643b9da268 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #25 0x00007f643b9ec47b in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #26 0x00007f643b9f3e97 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #27 0x00007f643b9f4b92 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #28 0x00007f643c5775f4 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 No symbol table info available. #29 0x00007f643c465df4 in gtk_propagate_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 No symbol table info available. #30 0x00007f643c4661ab in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 No symbol table info available. #31 0x00007f643c0e127c in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0 No symbol table info available. #32 0x00007f643b7120a6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #33 0x00007f643b7123f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #34 0x00007f643b7127fa in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #35 0x00007f643c465277 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 No symbol table info available. #36 0x00007f643ff1d0b8 in wxEventLoop::Run() () from /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-2.8.so.0 No symbol table info available. #37 0x00007f643ff8f19c in wxAppBase::MainLoop() () from /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-2.8.so.0 No symbol table info available. #38 0x00007f643f576655 in wxEntry(int&, wchar_t**) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0 No symbol table info available. #39 0x0000000000438702 in ?? () No symbol table info available. #40 0x00007f643c997ea5 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #41 0x0000000000439691 in ?? () No symbol table info available.