[Thread 0x7fffe00a5700 (LWP 19416) exited]
[Thread 0x7fffd181b700 (LWP 19413) exited]

Program received signal SIGSEGV, Segmentation fault.
0x0000000000ecca5c in boost::shared_ptr<Evoral::Parameter::Metadata>::operator Evoral::Parameter::Metadata* boost::shared_ptr<Evoral::Parameter::Metadata>::* (this=0x22a) at /usr/include/boost/smart_ptr/detail/operator_bool.hpp:47
47              return px == 0? 0: &this_type::px;
(gdb) thread apply all bt

Thread 29 (Thread 0x7fffc95ea700 (LWP 19431)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:215
#1  0x00007ffff52a5fa5 in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff523f761 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff523fdaa in g_async_queue_timeout_pop () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffff528ce22 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff528c645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ffff1b2ae9a in start_thread (arg=0x7fffc95ea700) at pthread_create.c:308
#7  0x00007ffff0a2ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 23 (Thread 0x7fffd2b2c700 (LWP 19425)):
#0  0x00007ffff0a23303 in __GI___poll (fds=<optimised out>, nfds=<optimised out>, timeout=<optimised out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffff5268d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff52691e2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff5e72570 in BaseUI::main_thread (this=0x4312f70) at ../libs/pbd/base_ui.cc:80
#4  0x00007ffff5e75cf2 in sigc::bound_mem_functor0<void, BaseUI>::operator() (this=0x43136d8)
    at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#5  0x00007ffff5e75a32 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x43136d0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#6  0x00007ffff5e753fb in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x43136a0)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff59acd4d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#8  0x00007ffff528c645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007ffff1b2ae9a in start_thread (arg=0x7fffd2b2c700) at pthread_create.c:308
#10 0x00007ffff0a2ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7fffd3fff700 (LWP 19405)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffff52a5eaf in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff727db4d in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:81
#3  0x00007ffff727d935 in analyser_work () at ../libs/ardour/analyser.cc:46
#4  0x000000000136c985 in sigc::pointer_functor0<void>::operator() (this=0x209ceb8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#5  0x000000000136a124 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x209ceb0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#6  0x0000000001366b71 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x209ce80)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff59acd4d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#8  0x00007ffff528c645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007ffff1b2ae9a in start_thread (arg=0x7fffd3fff700) at pthread_create.c:308
#10 0x00007ffff0a2ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7fffe0ba2700 (LWP 19404)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffff52a5eaf in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff766798e in peak_thread_work () at ../libs/ardour/source_factory.cc:68
#3  0x000000000136c985 in sigc::pointer_functor0<void>::operator() (this=0x209d288) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x000000000136a124 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x209d280)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#5  0x0000000001366b71 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x209d250)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff59acd4d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#7  0x00007ffff528c645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007ffff1b2ae9a in start_thread (arg=0x7fffe0ba2700) at pthread_create.c:308
#9  0x00007ffff0a2ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fffe13a3700 (LWP 19403)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffff52a5eaf in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff766798e in peak_thread_work () at ../libs/ardour/source_factory.cc:68
#3  0x000000000136c985 in sigc::pointer_functor0<void>::operator() (this=0x209a138) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x000000000136a124 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x209a130)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#5  0x0000000001366b71 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x209a100)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff59acd4d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#7  0x00007ffff528c645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007ffff1b2ae9a in start_thread (arg=0x7fffe13a3700) at pthread_create.c:308
#9  0x00007ffff0a2ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fffe1ba4700 (LWP 19402)):
#0  0x00007ffff09fa83d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007ffff0a28774 in usleep (useconds=<optimised out>) at ../sysdeps/unix/sysv/linux/usleep.c:33
#2  0x00000000015b2bbe in gui_event_loop (ptr=0x0) at ../gtk2_ardour/linux_vst_gui_support.cc:363
#3  0x00007ffff1b2ae9a in start_thread (arg=0x7fffe1ba4700) at pthread_create.c:308
#4  0x00007ffff0a2ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
---Type <return> to continue, or q <return> to quit---
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fffe33d0700 (LWP 19399)):
#0  0x00007ffff0a23303 in __GI___poll (fds=<optimised out>, nfds=<optimised out>, timeout=<optimised out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffff5268d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff52691e2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fffed5253b6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007ffff528c645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff1b2ae9a in start_thread (arg=0x7fffe33d0700) at pthread_create.c:308
#6  0x00007ffff0a2ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fffe3bd1700 (LWP 19398)):
#0  0x00007ffff0a23303 in __GI___poll (fds=<optimised out>, nfds=<optimised out>, timeout=<optimised out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffff5268d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff5268ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fffe3bdb4ad in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#4  0x00007ffff528c645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff1b2ae9a in start_thread (arg=0x7fffe3bd1700) at pthread_create.c:308
#6  0x00007ffff0a2ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fffe4b379c0 (LWP 19395)):
#0  0x0000000000ecca5c in boost::shared_ptr<Evoral::Parameter::Metadata>::operator Evoral::Parameter::Metadata* boost::shared_ptr<Evoral::Parameter::Metadata>::* (this=0x22a) at /usr/include/boost/smart_ptr/detail/operator_bool.hpp:47
#1  0x0000000000ecc1a8 in Evoral::Parameter::metadata (this=0x212)
    at /home/chris/Downloads/LinuxAudioApps/3.0_debug/libs/evoral/evoral/Parameter.hpp:99
#2  0x00000000013568fa in Evoral::Parameter::toggled (this=0x212)
    at /home/chris/Downloads/LinuxAudioApps/3.0_debug/libs/evoral/evoral/Parameter.hpp:108
#3  0x0000000001356990 in ARDOUR::AutomationControl::toggled (this=0x2)
    at /home/chris/Downloads/LinuxAudioApps/3.0_debug/libs/ardour/ardour/automation_control.h:94
#4  0x0000000001347eec in ProcessorEntry::Control::control_changed (this=0x12b2b630) at ../gtk2_ardour/processor_box.cc:534
#5  0x000000000136d0e7 in boost::_mfi::mf0<void, ProcessorEntry::Control>::operator() (this=0x7fffa80046b8, p=0x12b2b630)
    at /usr/include/boost/bind/mem_fn_template.hpp:49
#6  0x000000000136a5fe in boost::_bi::list1<boost::_bi::value<ProcessorEntry::Control*> >::operator()<boost::_mfi::mf0<void, ProcessorEntry::Control>, boost::_bi::list0> (this=0x7fffa80046c8, f=..., a=...) at /usr/include/boost/bind/bind.hpp:253
#7  0x000000000136723f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ProcessorEntry::Control>, boost::_bi::list1<boost::_bi::value<ProcessorEntry::Control*> > >::operator() (this=0x7fffa80046b8) at /usr/include/boost/bind/bind_template.hpp:20
#8  0x0000000001364487 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ProcessorEntry::Control>, boost::_bi::list1<boost::_bi::value<ProcessorEntry::Control*> > >, void>::invoke (function_obj_ptr=...)
    at /usr/include/boost/function/function_template.hpp:153
#9  0x0000000000e07f1c in boost::function0<void>::operator() (this=0x7fffa80046b0) at /usr/include/boost/function/function_template.hpp:760
#10 0x0000000000e0b442 in boost::_bi::list0::operator()<boost::function<void ()>, boost::_bi::list0>(boost::_bi::type<void>, boost::function<void ()>&, boost::_bi::list0&, int) (this=0x7fffa80046d0, f=...) at /usr/include/boost/bind/bind.hpp:192
#11 0x0000000000e0ad77 in boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void ()>, boost::_bi::list0>::operator()() (
    this=0x7fffa80046b0) at /usr/include/boost/bind/bind_template.hpp:20
#12 0x0000000000e0a37d in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void ()>, boost::_bi::list0>, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...)
    at /usr/include/boost/function/function_template.hpp:153
#13 0x0000000000e07f1c in boost::function0<void>::operator() (this=0x7fffa8004750) at /usr/include/boost/function/function_template.hpp:760
#14 0x00007ffff6257129 in Gtkmm2ext::UI::do_request (this=0x1d900f0, req=0x7fffa8004740) at ../libs/gtkmm2ext/gtk_ui.cc:447
#15 0x00007ffff6262844 in AbstractUI<Gtkmm2ext::UIRequest>::handle_ui_requests (this=0x1d900f0)
    at /home/chris/Downloads/LinuxAudioApps/3.0_debug/libs/pbd/pbd/abstract_ui.cc:272
#16 0x00007ffff5e72997 in BaseUI::request_handler (this=0x1d900f0, ioc=Glib::IO_IN) at ../libs/pbd/base_ui.cc:136
#17 0x00007ffff5e75b7e in sigc::bound_mem_functor1<bool, BaseUI, Glib::IOCondition>::operator() (this=0x1d92f88,
    _A_a1=@0x7fffffffd45c: Glib::IO_IN) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1851
#18 0x00007ffff5e75697 in sigc::adaptor_functor<sigc::bound_mem_functor1<bool, BaseUI, Glib::IOCondition> >::operator()<Glib::IOCondition const&> (this=0x1d92f80, _A_arg1=@0x7fffffffd45c: Glib::IO_IN) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:84
#19 0x00007ffff5e75072 in sigc::internal::slot_call1<sigc::bound_mem_functor1<bool, BaseUI, Glib::IOCondition>, bool, Glib::IOCondition>::call_it (rep=0x1d92f50, a_1=@0x7fffffffd45c: Glib::IO_IN) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:137
#20 0x00007ffff59b323c in Glib::IOSource::dispatch(sigc::slot_base*) () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#21 0x00007ffff59b2d1f in Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#22 0x00007ffff5268ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007ffff5268de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007ffff52691e2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007ffff4d1bc77 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#26 0x00007ffff62566ba in Gtkmm2ext::UI::run (this=0x1d900f0, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:268
#27 0x00000000011d084f in main (argc=1, argv=0x7fffffffd7e8) at ../gtk2_ardour/main.cc:455