Core dump on clean up in 4.1?

Does anyone else get seg faults when doing a clean-up in Ardour 4.1 (linux,
64 bit, Debian)?

Program received signal SIGSEGV, Segmentation fault.
0x00007fffeea31268 in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
(gdb) bt
#0  0x00007fffeea31268 in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#1  0x00007ffff7582bdf in ARDOUR::Session::cleanup_sources(ARDOUR::CleanupReport&) () from /opt/Ardour-4.1.0/lib/libardour.so.3
#2  0x00000000004d7dfe in ?? ()
#3  0x00007ffff589a6b2 in Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*) () from /opt/Ardour-4.1.0/lib/libglibmm-2.4.so.1
#4  0x00007ffff56021e2 in g_closure_invoke () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#5  0x00007ffff561903d in ?? () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#6  0x00007ffff561a3e2 in g_signal_emit_valist () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#7  0x00007ffff561a7e3 in g_signal_emit () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#8  0x00007ffff4674f78 in ?? () from /opt/Ardour-4.1.0/lib/libgtk-x11-2.0.so.0
#9  0x00007ffff560202a in ?? () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#10 0x00007ffff561998b in g_signal_emit_valist () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#11 0x00007ffff561a7e3 in g_signal_emit () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#12 0x00007ffff48c47ee in gtk_widget_activate () from /opt/Ardour-4.1.0/lib/libgtk-x11-2.0.so.0
#13 0x00007ffff4780e5b in gtk_menu_shell_activate_item () from /opt/Ardour-4.1.0/lib/libgtk-x11-2.0.so.0
#14 0x00007ffff4781a4a in ?? () from /opt/Ardour-4.1.0/lib/libgtk-x11-2.0.so.0
#15 0x00007ffff4771ade in ?? () from /opt/Ardour-4.1.0/lib/libgtk-x11-2.0.so.0
#16 0x00007ffff476cf38 in ?? () from /opt/Ardour-4.1.0/lib/libgtk-x11-2.0.so.0
#17 0x00007ffff56021e2 in g_closure_invoke () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#18 0x00007ffff5619272 in ?? () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#19 0x00007ffff5619f98 in g_signal_emit_valist () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#20 0x00007ffff561a7e3 in g_signal_emit () from /opt/Ardour-4.1.0/lib/libgobject-2.0.so.0
#21 0x00007ffff48c3d8f in ?? () from /opt/Ardour-4.1.0/lib/libgtk-x11-2.0.so.0
#22 0x00007ffff47650d3 in gtk_propagate_event () from /opt/Ardour-4.1.0/lib/libgtk-x11-2.0.so.0
#23 0x00007ffff4766c4b in gtk_main_do_event () from /opt/Ardour-4.1.0/lib/libgtk-x11-2.0.so.0
#24 0x00007ffff43a1f7c in ?? () from /opt/Ardour-4.1.0/lib/libgdk-x11-2.0.so.0
#25 0x00007ffff52fddae in g_main_context_dispatch () from /opt/Ardour-4.1.0/lib/libglib-2.0.so.0
#26 0x00007ffff52ffb08 in ?? () from /opt/Ardour-4.1.0/lib/libglib-2.0.so.0
#27 0x00007ffff52ffbb5 in g_main_loop_run () from /opt/Ardour-4.1.0/lib/libglib-2.0.so.0
#28 0x00007ffff4766657 in gtk_main () from /opt/Ardour-4.1.0/lib/libgtk-x11-2.0.so.0
#29 0x00007ffff6729414 in Gtkmm2ext::UI::run(Receiver&) () from /opt/Ardour-4.1.0/lib/libgtkmm2ext.so.0
#30 0x00000000007e86dd in ?? ()
#31 0x00007fffee0d2b45 in __libc_start_main (main=0x7e7d50, argc=1, argv=0x7fffffffe778, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe768) at libc-start.c:287
#32 0x000000000048a2d9 in ?? ()
#33 0x00007fffffffe768 in ?? ()
#34 0x000000000000001c in ?? ()
#35 0x0000000000000001 in ?? ()
#36 0x00007fffffffe9d4 in ?? ()
#37 0x0000000000000000 in ?? ()