displayconfig-gtk crashed with IndexError in acceptResolutionSettings()

[Kyubutsu]

Binary package hint: displayconfig-gtk

8.04 2.6.24-12-generic x86_64 amd64
while trying to set up external monitor. system does not automatically detect. manual configuration via screens and graphics cannot set screen 2. program crash.

ProblemType: Crash
Architecture: amd64
Date: Sat Mar 29 15:56:28 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/bin/displayconfig-gtk
InterpreterPath: /usr/bin/python2.5
NonfreeKernelModules: nvidia
Package: displayconfig-gtk 0.3.9
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/displayconfig-gtk
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/displayconfig-gtk']
SourcePackage: displayconfig-gtk
Title: displayconfig-gtk crashed with IndexError in acceptResolutionSettings()
Uname: Linux 2.6.24-12-generic x86_64
UserGroups: