#0  IA__g_logv (log_domain=0x7f9147bc02c3 "Gdk", log_level=G_LOG_LEVEL_ERROR, 
    format=0x7f9147bdda87 "%s", args1=0x7fff51c54c60)
    at /build/buildd/glib2.0-2.19.8/glib/gmessages.c:503
	depth = <value optimized out>
	domain = (GLogDomain *) 0x1767650
	data = (gpointer) 0x0
	log_func = (GLogFunc) 0x7f9145b64b10 <IA__g_log_default_handler>
	domain_fatal_mask = 5
	test_level = G_LOG_FLAG_FATAL
	was_recursion = 0
	i = <value optimized out>
#1  0x00007f9145b65463 in IA__g_log (log_domain=0x7f9145b1ca00 "", 
    log_level=1166980496, format=0x17747f0 "`")
    at /build/buildd/glib2.0-2.19.8/glib/gmessages.c:517
	args = {{gp_offset = 32, fp_offset = 48, 
    overflow_arg_area = 0x7fff51c54d40, reg_save_area = 0x7fff51c54c80}}
#2  0x00007f9147ba8652 in gdk_x_error (display=<value optimized out>, 
    error=<value optimized out>)
    at /build/buildd/gtk+2.0-2.15.4/gdk/x11/gdkmain-x11.c:641
	buf = "BadWindow (invalid Window parameter)", '\0' <repeats 27 times>
#3  0x00007f91486ba5b4 in _XError () from /usr/lib/libX11.so.6
#4  0x00007f91486c206b in _XReply () from /usr/lib/libX11.so.6
#5  0x00007f91486b01fc in XQueryTree () from /usr/lib/libX11.so.6
#6  0x000000000040aa94 in screenshot_get_pixbuf ()
#7  0x00000000004089f4 in ?? ()
#8  0x00007f9146e065dc in mainloop_proxy_func (data=<value optimized out>)
    at /build/buildd/glib2.0-2.19.8/gio/gioscheduler.c:314
	proxy = (MainLoopProxy *) 0x175cae0
#9  0x00007f9145b5b19a in IA__g_main_context_dispatch (context=0x1500f70)
    at /build/buildd/glib2.0-2.19.8/glib/gmain.c:1814
No locals.
#10 0x00007f9145b5e870 in g_main_context_iterate (context=0x1500f70, block=1, 
    dispatch=1, self=<value optimized out>)
    at /build/buildd/glib2.0-2.19.8/glib/gmain.c:2448
	max_priority = 0
	timeout = 0
	some_ready = 1
	nfds = 7
	allocated_nfds = <value optimized out>
	fds = (GPollFD *) 0x1881a70
	__PRETTY_FUNCTION__ = "g_main_context_iterate"
#11 0x00007f9145b5ed3d in IA__g_main_loop_run (loop=0x1753f90)
    at /build/buildd/glib2.0-2.19.8/glib/gmain.c:2656
	self = (GThread *) 0x14df380
	__PRETTY_FUNCTION__ = "IA__g_main_loop_run"
#12 0x00007f9147f452e7 in IA__gtk_main ()
    at /build/buildd/gtk+2.0-2.15.4/gtk/gtkmain.c:1205
	tmp_list = (GList *) 0x154f7c0
	functions = (GList *) 0x0
	init = (GtkInitFunction *) 0xfffffffb
	loop = <value optimized out>
#13 0x0000000000407c96 in main ()