(xfce4-panel:16593): GLib-GObject-CRITICAL **: file gobject.c: line 1711: assertion `G_IS_OBJECT (object)' failed
DBG[panel-properties.c:578] ??():
 + Position: 11
 + Offset: (1789, 986)
DBG[panel-properties.c:580] ??():  + coordinates: (1789, 986)

DBG[panel-properties.c:844] ??():  + coordinates: (1789, 986)

DBG[panel-properties.c:847] ??():
 + Position: 11
 + Offset: (1789, 986)

(xfce4-panel:16593): Gdk-CRITICAL **: file gdkscreen-x11.c: line 216: assertion `GDK_IS_SCREEN (screen)' failed
signal SEGV (no mapping at the fault address) in gdk_window_foreign_new_for_display at 0xff1dd828
0xff1dd828: gdk_window_foreign_new_for_display+0x018c:  ld       [%o0 + 40], %o0
(dbx) gdb on
(dbx) bt
=>[1] gdk_window_foreign_new_for_display(0x52098, 0x20b8000d, 0x1de970, 0x1e08e8, 0xff21c4fc, 0x0), at 0xff1dd828
  [2] 0xfee0f430(0x9d830, 0x20b8000d, 0x0, 0x0, 0x1f2028, 0x2800), at 0xfee0f430
  [3] 0xfef019f0(0xffbfec90, 0xfef018a0, 0x9d830, 0x138, 0x0, 0x1c), at 0xfef019f0
  [4] 0xff1c9894(0xfef01904, 0x1254a8, 0x0, 0xc2408, 0xfe6e9fa8, 0x800), at 0xff1c9894
  [5] 0xff1ca71c(0x52098, 0x1254a8, 0xffbfec90, 0x0, 0xff221df4, 0x11b668), at 0xff1ca71c
  [6] 0xff1cbf08(0x52098, 0x0, 0x6fc24, 0x0, 0x3f448, 0x8), at 0xff1cbf08
  [7] 0xff1cc0d8(0x590b8, 0x33e4, 0x50460, 0x52098, 0x3000, 0xff21c4fc), at 0xff1cc0d8
  [8] 0xfe5c3874(0x5a098, 0x0, 0xfe654368, 0xfe65a5ec, 0xfe64de6c, 0x1c6c10), at 0xfe5c3874
  [9] g_main_context_dispatch(0x5a098, 0x48d4, 0xfe654364, 0x1, 0x4800, 0xfe654360), at 0xfe5c4e30
  [10] 0xfe5c5338(0x5a098, 0x1, 0x1, 0x5a0a0, 0xaef28, 0x1), at 0xfe5c5338
  [11] g_main_loop_run(0x1dede8, 0x0, 0x68e68, 0x1dedf0, 0x1, 0x0), at 0xfe5c5bb8
  [12] gtk_main(0x1, 0x0, 0x1dede8, 0xff221e30, 0xff02db28, 0x1c6c00), at 0xfed9b2ec
  [13] panel_app_run(0x19000, 0x39000, 0x18c00, 0x2, 0x39128, 0x19400), at 0x19904
  [14] main(0x1, 0xffbff09c, 0xffbff0a4, 0x25400, 0x25400, 0x25400), at 0x18830