We can't load a *.ella file

[n1c0la5]

When I want load a file in ella, whit the last revision (458), Ella stops...

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff56b0027 in g_object_set () from /usr/lib/libgobject-2.0.so.0

#0 0x00007ffff56b0027 in g_object_set () from /usr/lib/libgobject-2.0.so.0
#1 0x000000000043b394 in timeline_layer_set_visibility (ligne=1,
    root=0x696c3c202020200a, visible=1)
    at /home/nicolas/ella_bzr/ella/src/timeline.c:238
#2 0x0000000000416228 in open_file (window1=0x6d06c0,
    chemin=0xd15220 "/home/nicolas/tuto2.ella")
    at /home/nicolas/ella_bzr/ella/src/callbacks.c:431
#3 0x0000000000417a60 in ouvrir_fichier_ella (window1=0x6d06c0)
    at /home/nicolas/ella_bzr/ella/src/callbacks.c:898
#4 0x000000000041a4ed in on_buttonOpen_clicked (button=0x7d5150,
    window1=0x6d06c0) at /home/nicolas/ella_bzr/ella/src/callbacks.c:2318
#5 0x00007ffff56a9a6e in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#6 0x00007ffff56bf4d7 in ?? () from /usr/lib/libgobject-2.0.so.0
#7 0x00007ffff56c0996 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#8 0x00007ffff56c0ce8 in g_signal_emit_by_name ()
   from /usr/lib/libgobject-2.0.so.0
#9 0x00007ffff56a9a6e in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#10 0x00007ffff56bf4d7 in ?? () from /usr/lib/libgobject-2.0.so.0
#11 0x00007ffff56c0996 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#12 0x00007ffff56c0f53 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#13 0x00007ffff7609e85 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#14 0x00007ffff56a9a6e in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#15 0x00007ffff56beda1 in ?? () from /usr/lib/libgobject-2.0.so.0
#16 0x00007ffff56c0996 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#17 0x00007ffff56c0f53 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#18 0x00007ffff7608b8d in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#19 0x00007ffff76b69d8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#20 0x00007ffff56a9a6e in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#21 0x00007ffff56bf120 in ?? () from /usr/lib/libgobject-2.0.so.0
#22 0x00007ffff56c07db in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#23 0x00007ffff56c0f53 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#24 0x00007ffff77cf6df in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#25 0x00007ffff76aee73 in gtk_propagate_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
#26 0x00007ffff76aff4b in gtk_main_do_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
#27 0x00007ffff732974c in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#28 0x00007ffff4de8342 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#29 0x00007ffff4dec2a8 in ?? () from /lib/libglib-2.0.so.0
#30 0x00007ffff4dec7b5 in g_main_loop_run () from /lib/libglib-2.0.so.0
#31 0x00007ffff76b03e7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#32 0x000000000043116a in main (argc=1, argv=0x7fffffffe8a8)