gnome-screenshot crashed with signal 5 in _XError()

[bigal]

Binary package hint: gnome-utils

I got this error when I was taking a screenshot with "Take Screenshot" app
selecting "Grab the current window"
setting the "Grab delay to "0 seconds"
no screenshot was taken
then the error appeared on screen
If I set it to 1 second or more it will take a screenshot

ProblemType: Crash
Architecture: i386
CrashCounter: 1
Date: Sun Aug 30 18:10:00 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/gnome-screenshot
Package: gnome-utils 2.27.91-0ubuntu1
ProcCmdline: gnome-screenshot --interactive
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-8.28-generic
Signal: 5
SourcePackage: gnome-utils
StacktraceTop:
 ?? () from /usr/lib/libgdk-x11-2.0.so.0
 _XError () from /usr/lib/libX11.so.6
 _XReply () from /usr/lib/libX11.so.6
 XQueryTree () from /usr/lib/libX11.so.6
 screenshot_get_pixbuf ()
Title: gnome-screenshot crashed with signal 5 in _XError()
Uname: Linux 2.6.31-8-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare