gtwitter.exe crashed with System.NullReferenceException in gtwitter.MainWindow.UpdateRefresh()

[Eliah Kagan]

Binary package hint: gtwitter

In a Unity session on a Natty i386 system, I ran gtwitter 1.0~beta-10 from a Terminal window. It opened with the Preferences window, as I had not previously configured it. I allowed it to remain idle for several minutes, and then it crashed, with mono printing the following trace:

Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.NullReferenceException: Object reference not set to an instance of an object
  at gtwitter.MainWindow.UpdateRefresh () [0x00000] in <filename unknown>:0
  at GLib.Timeout+TimeoutProxy.Handler () [0x00000] in <filename unknown>:0
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at GLib.Timeout+TimeoutProxy.Handler()
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at gtwitter.MainClass.MainWindowInit()
   at gtwitter.MainClass.Main(System.String[] args)

I can reproduce this easily; it occurs every time I launch gtwitter, and leave it alone for a few minutes.

The information attached by Apport was obtained by running ubuntu-bug with the PID of the mono instance running gtwitter.exe, after relaunching gtwitter.

I would be pleased to perform additional debugging tasks, upon request.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gtwitter 1.0~beta-10
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Thu Jun 2 15:50:30 2011
ExecutablePath: /usr/lib/gtwitter/gtwitter.exe
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
InterpreterPath: /usr/bin/mono
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gtwitter
UpgradeStatus: Upgraded to natty on 2011-04-01 (62 days ago)