(bmpx:532): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(bmpx:532): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1088565408 (LWP 532)]
0x080864ea in on_bmp_font_changed (self=0x82a55d0) at ui.c:491
491         font_desc =
(gdb) bt
#0  0x080864ea in on_bmp_font_changed (self=0x82a55d0) at ui.c:491
#1  0x40a154bb in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0
#2  0x40a08ee9 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#3  0x40a18d1b in signal_emit_unlocked_R () from /usr/lib/libgobject-2.0.so.0
#4  0x40a19e90 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#5  0x40a1d4a0 in g_signal_emit_by_name () from /usr/lib/libgobject-2.0.so.0
#6  0x08086f41 in ui_initialize (self=0x82a55d0) at ui.c:730
#7  0x0808776e in bmp_ui_finalize_init (self=0x82a55d0) at ui.c:925
#8  0x0806db2b in process_messages (self=0x829fd98) at system_control.c:1276
#9  0x40a69451 in g_idle_dispatch () from /usr/lib/libglib-2.0.so.0
#10 0x40a66edc in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#11 0x40a6a2bb in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#12 0x40a6a7d7 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#13 0x406e1185 in gtk_main_iteration () from /usr/lib/libgtk-x11-2.0.so.0
#14 0x08087eaf in bmp_splash_window_hide () at ui_splash.c:214
#15 0x08061e7c in main (argc=1, argv=0xbf9af294) at main.c:467
(gdb) bt full
#0  0x080864ea in on_bmp_font_changed (self=0x82a55d0) at ui.c:491
        font_desc = (PangoFontDescription *) 0x40a38728
        font = (const gchar *) 0x0
#1  0x40a154bb in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#2  0x40a08ee9 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#3  0x40a18d1b in signal_emit_unlocked_R () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#4  0x40a19e90 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#5  0x40a1d4a0 in g_signal_emit_by_name () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#6  0x08086f41 in ui_initialize (self=0x82a55d0) at ui.c:730
        n = 2
        error = (GError *) 0x0
        filename = (const gchar *) 0x80aa4f0 "/usr/local/share/bmpx/skins/default"
        listname = (const gchar *) 0x80aa81a "gtk-cursor-theme-name"
        title = (gchar *) 0xbf9aeff0 "h\232p,\001@\2210\tU*\b"
        trayicon_ui = (
    gchar *) 0x40a8e131 "\203\024[]\215\203J\211D$\b\215\203\211D$\004\215\203W\211\004$*1\215v"
---Type <return> to continue, or q <return> to quit---
        rv = 0
        n = 11
#7  0x0808776e in bmp_ui_finalize_init (self=0x82a55d0) at ui.c:925
        rv = 0
#8  0x0806db2b in process_messages (self=0x829fd98) at system_control.c:1276
        message = (bmp_message_t *) 0x93091f0
        queue_length = -1080364968
        __PRETTY_FUNCTION__ = "process_messages"
#9  0x40a69451 in g_idle_dispatch () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#10 0x40a66edc in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#11 0x40a6a2bb in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#12 0x40a6a7d7 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#13 0x406e1185 in gtk_main_iteration () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#14 0x08087eaf in bmp_splash_window_hide () at ui_splash.c:214
        i = 1
#15 0x08061e7c in main (argc=1, argv=0xbf9af294) at main.c:467
        error = (GError *) 0x0
---Type <return> to continue, or q <return> to quit---
        sanity_error = (gchar *) 0x0
        oc_bmp = (GOptionContext *) 0x80bffe0
        new_configuration = 0