#0  0xb7fdb410 in ?? ()
#1  0xbff14298 in ?? ()
#2  0x00000006 in ?? ()
#3  0xb69bfdf8 in abort () from /lib/libc.so.6
#4  0xb69b7f1c in __assert_fail () from /lib/libc.so.6
#5  0x081514ec in Track (this=0xbff146a4, row=@0xbff14874, use_hal=true) at /usr/include/boost/optional/optional.hpp:526
#6  0x0815f3ee in Bmp::Library::Library::insert (this=0x859edc0, location=@0xbff14d14, insert_path=@0xbff14c88) at library.cc:996
#7  0x08254d05 in Bmp::PlayerShell::import_tracks (this=0x86faa38) at shell.cc:1917
#8  0xb77876fa in Glib::SignalProxyNormal::slot0_void_callback () from /usr/lib/libglibmm-2.4.so.1
#9  0xb72cac3b in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0
#10 0xb72bd09b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#11 0xb72cdfe8 in ?? () from /usr/lib/libgobject-2.0.so.0
#12 0x086f2c20 in ?? ()
#13 0x00000000 in ?? ()