Program received signal SIGABRT, Aborted.
0x00007ffff03cd355 in raise () from /lib64/libc.so.6
(gdb) thread apply all bt

Thread 11 (Thread 0x7fffc50c9700 (LWP 27147)):
#0  0x00007ffff04641f3 in poll () from /lib64/libc.so.6
#1  0x00007ffff42dafb9 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff42db765 in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ffff78d9f6d in BaseUI::main_thread (this=0x7fffdc010b20) at ../libs/pbd/base_ui.cc:77
#4  0x00007ffff78db429 in sigc::bound_mem_functor0<void, BaseUI>::operator() (this=0x7fffdc0912e8) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#5  0x00007ffff78db284 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x7fffdc0912e0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#6  0x00007ffff78dafdd in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x7fffdc0912b0)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff3e63422 in ?? () from /usr/lib64/libglibmm-2.4.so.1
#8  0x00007ffff4300864 in ?? () from /usr/lib64/libglib-2.0.so.0
#9  0x00007ffff0707c1a in start_thread () from /lib64/libpthread.so.0
#10 0x00007ffff046ce7d in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7fffc5143820 (LWP 27146)):
#0  0x00007ffff04641f3 in poll () from /lib64/libc.so.6
#1  0x00007ffff67a6bb4 in ARDOUR::Butler::thread_work (this=0x3809b70) at ../libs/ardour/butler.cc:159
#2  0x00007ffff67a6b3b in ARDOUR::Butler::_thread_work (arg=0x3809b70) at ../libs/ardour/butler.cc:140
#3  0x00007ffff7910842 in fake_thread_start (arg=0x38ac9d0) at ../libs/pbd/pthread_utils.cc:81
#4  0x00007ffff0707c1a in start_thread () from /lib64/libpthread.so.0
#5  0x00007ffff046ce7d in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7fffc556f700 (LWP 27145)):
#0  0x00007ffff070e790 in sem_wait () from /lib64/libpthread.so.0
#1  0x00007ffff68a0ed8 in PBD::ProcessSemaphore::wait (this=0x380afb8) at ../libs/pbd/pbd/semutils.h:41
#2  0x00007ffff689f106 in ARDOUR::Graph::run_one (this=0x380aef0) at ../libs/ardour/graph.cc:393
#3  0x00007ffff689f4b5 in ARDOUR::Graph::helper_thread (this=0x380aef0) at ../libs/ardour/graph.cc:443
#4  0x00007ffff68a50c3 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffc556eca8, p=0x380aef0) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff68a4aac in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffc556ecb8, 
    f=..., a=...) at /usr/include/boost/bind/bind.hpp:253
#6  0x00007ffff68a4687 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffc556eca8) at /usr/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff68a41e6 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:153
#8  0x0000000001021f29 in boost::function0<void>::operator() (this=0x7fffc556eca0) at /usr/include/boost/function/function_template.hpp:1013
#9  0x00007ffff6724665 in ARDOUR::AudioEngine::_start_process_thread (arg=0x381b380) at ../libs/ardour/audioengine.cc:1519
#10 0x00007ffff0707c1a in start_thread () from /lib64/libpthread.so.0
#11 0x00007ffff046ce7d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7fffe0092700 (LWP 27144)):
#0  0x00007ffff070e790 in sem_wait () from /lib64/libpthread.so.0
#1  0x00007ffff68a0ed8 in PBD::ProcessSemaphore::wait (this=0x380afd8) at ../libs/pbd/pbd/semutils.h:41
#2  0x00007ffff689f541 in ARDOUR::Graph::main_thread (this=0x380aef0) at ../libs/ardour/graph.cc:462
#3  0x00007ffff68a50c3 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffe0091ca8, p=0x380aef0) at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff68a4aac in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffe0091cb8, 
    f=..., a=...) at /usr/include/boost/bind/bind.hpp:253
#5  0x00007ffff68a4687 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffe0091ca8) at /usr/include/boost/bind/bind_template.hpp:20
---Type <return> to continue, or q <return> to quit--- 
#6  0x00007ffff68a41e6 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:153
#7  0x0000000001021f29 in boost::function0<void>::operator() (this=0x7fffe0091ca0) at /usr/include/boost/function/function_template.hpp:1013
#8  0x00007ffff6724665 in ARDOUR::AudioEngine::_start_process_thread (arg=0x381b380) at ../libs/ardour/audioengine.cc:1519
#9  0x00007ffff0707c1a in start_thread () from /lib64/libpthread.so.0
#10 0x00007ffff046ce7d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fffe0113700 (LWP 27143)):
#0  0x00007ffff070e881 in sem_timedwait () from /lib64/libpthread.so.0
#1  0x00007ffff45cfbd0 in ?? () from /usr/lib64/libjack.so.0
#2  0x00007ffff45bbf3b in ?? () from /usr/lib64/libjack.so.0
#3  0x00007ffff45b8a67 in ?? () from /usr/lib64/libjack.so.0
#4  0x00007ffff67205b6 in ARDOUR::AudioEngine::process_thread (this=0x22c9800) at ../libs/ardour/audioengine.cc:456
#5  0x00007ffff67201de in ARDOUR::AudioEngine::_process_thread (arg=0x22c9800) at ../libs/ardour/audioengine.cc:371
#6  0x00007ffff45ba3e8 in ?? () from /usr/lib64/libjack.so.0
#7  0x00007ffff45cf5b0 in ?? () from /usr/lib64/libjack.so.0
#8  0x00007ffff0707c1a in start_thread () from /lib64/libpthread.so.0
#9  0x00007ffff046ce7d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fffe23d8700 (LWP 27142)):
#0  0x00007ffff070f55d in read () from /lib64/libpthread.so.0
#1  0x00007ffff45d0e42 in ?? () from /usr/lib64/libjack.so.0
#2  0x00007ffff45d4a67 in ?? () from /usr/lib64/libjack.so.0
#3  0x00007ffff45cf5b0 in ?? () from /usr/lib64/libjack.so.0
#4  0x00007ffff0707c1a in start_thread () from /lib64/libpthread.so.0
#5  0x00007ffff046ce7d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7ffff7ee3700 (LWP 27141)):
#0  0x00007ffff070c56c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffff45d0a21 in ?? () from /usr/lib64/libjack.so.0
#2  0x00007ffff45ca075 in ?? () from /usr/lib64/libjack.so.0
#3  0x00007ffff45cf5b0 in ?? () from /usr/lib64/libjack.so.0
#4  0x00007ffff0707c1a in start_thread () from /lib64/libpthread.so.0
#5  0x00007ffff046ce7d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fffe2ddf700 (LWP 27140)):
#0  0x00007ffff070c56c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffff66a7483 in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:85
#2  0x00007ffff66a71b1 in analyser_work () at ../libs/ardour/analyser.cc:49
#3  0x000000000162fdf1 in sigc::pointer_functor0<void>::operator() (this=0x7fffdc0009b8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x000000000162d5fe in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x7fffdc0009b0) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#5  0x000000000162a519 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x7fffdc000980) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff3e63422 in ?? () from /usr/lib64/libglibmm-2.4.so.1
#7  0x00007ffff4300864 in ?? () from /usr/lib64/libglib-2.0.so.0
#8  0x00007ffff0707c1a in start_thread () from /lib64/libpthread.so.0
#9  0x00007ffff046ce7d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fffe35e0700 (LWP 27139)):
#0  0x00007ffff070c56c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffff6bb6def in peak_thread_work () at ../libs/ardour/source_factory.cc:73
---Type <return> to continue, or q <return> to quit---
#2  0x000000000162fdf1 in sigc::pointer_functor0<void>::operator() (this=0x23ddce8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#3  0x000000000162d5fe in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x23ddce0) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#4  0x000000000162a519 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x23ddcb0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#5  0x00007ffff3e63422 in ?? () from /usr/lib64/libglibmm-2.4.so.1
#6  0x00007ffff4300864 in ?? () from /usr/lib64/libglib-2.0.so.0
#7  0x00007ffff0707c1a in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffff046ce7d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fffe3de1700 (LWP 27138)):
#0  0x00007ffff070c56c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffff6bb6def in peak_thread_work () at ../libs/ardour/source_factory.cc:73
#2  0x000000000162fdf1 in sigc::pointer_functor0<void>::operator() (this=0x23c6a08) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#3  0x000000000162d5fe in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x23c6a00) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#4  0x000000000162a519 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x23c69d0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#5  0x00007ffff3e63422 in ?? () from /usr/lib64/libglibmm-2.4.so.1
#6  0x00007ffff4300864 in ?? () from /usr/lib64/libglib-2.0.so.0
#7  0x00007ffff0707c1a in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffff046ce7d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7ffff7f99900 (LWP 27135)):
#0  0x00007ffff03cd355 in raise () from /lib64/libc.so.6
#1  0x00007ffff03ce5ef in abort () from /lib64/libc.so.6
#2  0x00007ffff69a1673 in ARDOUR::PannerShell::configure_io (this=0x7fffdc1dd500, in=..., out=...) at ../libs/ardour/panner_shell.cc:104
#3  0x00007ffff67c6558 in ARDOUR::Delivery::panners_became_legal (this=0x7fffdc1dc460) at ../libs/ardour/delivery.cc:435
#4  0x00007ffff67cbe27 in boost::_mfi::mf0<int, ARDOUR::Delivery>::operator() (this=0x38cf280, p=0x7fffdc1dc460) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff67cb275 in boost::_bi::list1<boost::_bi::value<ARDOUR::Delivery*> >::operator()<int, boost::_mfi::mf0<int, ARDOUR::Delivery>, boost::_bi::list0> (this=0x38cf290, 
    f=..., a=...) at /usr/include/boost/bind/bind.hpp:243
#6  0x00007ffff67ca38d in boost::_bi::bind_t<int, boost::_mfi::mf0<int, ARDOUR::Delivery>, boost::_bi::list1<boost::_bi::value<ARDOUR::Delivery*> > >::operator() (this=0x38cf280)
    at /usr/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff67c976a in boost::detail::function::function_obj_invoker0<boost::_bi::bind_t<int, boost::_mfi::mf0<int, ARDOUR::Delivery>, boost::_bi::list1<boost::_bi::value<ARDOUR::Delivery*> > >, int>::invoke (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:132
#8  0x00007ffff67cc6d1 in boost::function0<int>::operator()() const () from /usr/lib/ardour3/libardour.so.3
#9  0x00007ffff67cc61d in boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int ()()>, boost::function<int ()(boost::signals2::connection const&)>, boost::signals2::mutex>::slot_invoker::m_invoke(boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int ()()> >, boost::signals2::mutex> > const&, ...) const ()
   from /usr/lib/ardour3/libardour.so.3
#10 0x00007ffff67cc508 in boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int ()()>, boost::function<int ()(boost::signals2::connection const&)>, boost::signals2::mutex>::slot_invoker::operator()(boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int ()()> >, boost::signals2::mutex> > const&) const ()
   from /usr/lib/ardour3/libardour.so.3
#11 0x00007ffff67cc197 in boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int ()()>, boost::function<int ()(boost::signals2::connection const&)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int ()()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int ()()> >, boost::signals2::mutex> >::dereference() const () from /usr/lib/ardour3/libardour.so.3
#12 0x00007ffff67cbeb2 in boost::iterator_core_access::dereference<boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >(const boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal0_impl<int, boost::signals2::optio---Type <return> to continue, or q <return> to quit---
nal_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > &) (f=...) at /usr/include/boost/iterator/iterator_facade.hpp:516
#13 0x00007ffff67cb4ea in boost::iterator_facade<boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> >, int, boost::single_pass_traversal_tag, const int&, long int>::operator*(void) const (this=0x7fffffffb1a0)
    at /usr/include/boost/iterator/iterator_facade.hpp:634
#14 0x00007ffff67ca739 in boost::signals2::optional_last_value<int>::operator()<boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >(boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> >, boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> >) const (this=0x2146aa0, first=..., last=...) at /usr/include/boost/signals2/optional_last_value.hpp:34
#15 0x00007ffff67c9a45 in boost::signals2::detail::combiner_invoker<boost::optional<int> >::operator()<boost::signals2::optional_last_value<int>, boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >(boost::signals2::optional_last_value<int> &, boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> >, boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot0<int, boost::function<int()> >, boost::signals2::mutex> >) const (this=0x7fffffffb3cf, combiner=..., first=..., last=...) at /usr/include/boost/signals2/detail/result_type_wrapper.hpp:53
#16 0x00007ffff67c8d75 in boost::signals2::detail::signal0_impl<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::operator()(void) (this=0x21469b0) at /usr/include/boost/signals2/detail/signal_template.hpp:246
#17 0x00007ffff67c8544 in boost::signals2::signal0<int, boost::signals2::optional_last_value<int>, int, std::less<int>, boost::function<int()>, boost::function<int(const boost::signals2::connection&)>, boost::signals2::mutex>::operator()(void) (this=0x7ffff73094e0) at /usr/include/boost/signals2/detail/signal_template.hpp:675
#18 0x00007ffff67c7aa2 in PBD::Signal0<int>::operator() (this=0x7ffff73094e0) at ../libs/pbd/pbd/signals.h:110
#19 0x00007ffff67c66cb in ARDOUR::Delivery::reset_panners () at ../libs/ardour/delivery.cc:471
#20 0x00007ffff6aa3b5c in ARDOUR::Session::hookup_io (this=0x3804270) at ../libs/ardour/session.cc:693
#21 0x00007ffff6aa256e in ARDOUR::Session::when_engine_running (this=0x3804270) at ../libs/ardour/session.cc:532
#22 0x00007ffff6b4518c in ARDOUR::Session::second_stage_init (this=0x3804270) at ../libs/ardour/session_state.cc:345
#23 0x00007ffff6a9b263 in ARDOUR::Session::Session (this=0x3804270, eng=..., fullpath=..., snapshot_name=..., bus_profile=0x0, mix_template=...) at ../libs/ardour/session.cc:190
#24 0x0000000000fd8143 in ARDOUR_UI::load_session (this=0x21b6210, path=..., snap_name=..., mix_template=...) at ../gtk2_ardour/ardour_ui.cc:2669
#25 0x0000000000fd7cbe in ARDOUR_UI::get_session_parameters (this=0x21b6210, quit_on_cancel=true, should_be_new=false, load_template=...) at ../gtk2_ardour/ardour_ui.cc:2604
#26 0x0000000000fce405 in ARDOUR_UI::startup (this=0x21b6210) at ../gtk2_ardour/ardour_ui.cc:698
---Type <return> to continue, or q <return> to quit---
#27 0x0000000001002fa5 in sigc::bound_mem_functor0<void, ARDOUR_UI>::operator() (this=0x23ce258) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#28 0x0000000000ffc17e in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ARDOUR_UI> >::operator() (this=0x23ce250)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#29 0x0000000000ff63b7 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ARDOUR_UI>, void>::call_it (rep=0x23ce220)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#30 0x0000000000fdeadd in sigc::internal::signal_emit0<void, sigc::nil>::emit (impl=0x23c3f40) at /usr/include/sigc++-2.0/sigc++/signal.h:772
#31 0x0000000000fe831a in sigc::signal0<void, sigc::nil>::emit (this=0x21b62d0) at /usr/include/sigc++-2.0/sigc++/signal.h:2669
#32 0x0000000000fe3b22 in sigc::signal0<void, sigc::nil>::operator() (this=0x21b62d0) at /usr/include/sigc++-2.0/sigc++/signal.h:2677
#33 0x00007ffff56395f3 in Gtkmm2ext::UI::run (this=0x21b6210, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:266
#34 0x0000000001472ddc in main (argc=2, argv=0x7fffffffcbf8) at ../gtk2_ardour/main.cc:557