G_DEBUG=fatal_warnings gdb -> run --debug Nereid.exe (crash in master with unmanaged backend and ubuntu 13.10)

gistfile1.txt

[New Thread 0x7fffb1760700 (LWP 28496)]
[New Thread 0x7fffb0f5f700 (LWP 28497)]
[New Thread 0x7fffb075e700 (LWP 28498)]
[New Thread 0x7fffaff5d700 (LWP 28499)]
[New Thread 0x7fffaf75c700 (LWP 28500)]

(Nereid:28466): GStreamer-CRITICAL **: gst_element_query: assertion 'GST_IS_ELEMENT (element)' failed

Program received signal SIGTRAP, Trace/breakpoint trap.
0x00007ffff443a3c9 in g_logv () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
(gdb) bt
#0  0x00007ffff443a3c9 in g_logv () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ffff443a512 in g_log () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffe438f2ff in gst_element_query ()
   from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#3  0x00007fffe53945ca in _bp_dvd_elements_process_message (
    player=player@entry=0x1284c90, message=message@entry=0x7fffe0129020)
    at banshee-player-dvd.c:85
#4  0x00007fffe53960ff in bp_pipeline_bus_callback (bus=<optimized out>, 
    message=0x7fffe0129020, userdata=0x1284c90)
    at banshee-player-pipeline.c:217
#5  0x00007fffe437def1 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#6  0x00007ffff44333a6 in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007ffff44336f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007ffff4433afa in g_main_loop_run ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fffef019455 in gtk_main ()
   from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#10 0x000000004022ddd5 in ?? ()
#11 0x000000000093c9d0 in ?? ()
#12 0x00007ffff53f7fa0 in ?? ()
#13 0x0000000000000000 in ?? ()
(gdb)