Program received signal SIGSEGV, Segmentation fault.
0xb607a145 in std::string::assign(std::string const&) () from /usr/lib/libstdc++.so.6
(gdb) bt
#0  0xb607a145 in std::string::assign(std::string const&) () from /usr/lib/libstdc++.so.6
#1  0xb7f4ce09 in XMLNode::XMLNode(XMLNode const&) () from gtk2_ardour/../build/default/libs/pbd/libpbd.so.4
#2  0xb7f4cfee in XMLNode::add_child_copy(XMLNode const&) () from gtk2_ardour/../build/default/libs/pbd/libpbd.so.4
#3  0xb7f42f1c in PBD::Stateful::add_instant_xml(XMLNode&, PBD::sys::path const&) () from gtk2_ardour/../build/default/libs/pbd/libpbd.so.4
#4  0xb7c2dfb6 in ARDOUR::Session::add_instant_xml(XMLNode&, bool) () from gtk2_ardour/../build/default/libs/ardour/libardour.so.3
#5  0x081c1b8a in ARDOUR_UI::build_session(std::string const&, std::string const&, ARDOUR::BusProfile&) ()
#6  0x081c1e8b in ARDOUR_UI::build_session_from_nsd(std::string const&, std::string const&) ()
#7  0x081c22a6 in ARDOUR_UI::get_session_parameters(bool, bool, std::string) ()
#8  0x081c348a in ARDOUR_UI::startup() ()
#9  0x081cd7cc in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ARDOUR_UI>, void>::call_it(sigc::internal::slot_rep*) ()
#10 0xb76c2e09 in Gtkmm2ext::UI::run(Receiver&) () from gtk2_ardour/../build/default/libs/gtkmm2ext/libgtkmm2ext.so.0
#11 0x085176f7 in main ()