Banshee crashes Immediatly after clicking on Amazon MP3 menu entry

[exactt]

Start Banshee, click on Amazon MP3 Store in the menu on the left. Banshee freezes.

Oneiric AMD64

Here is the output of the console:

:~$ banshee
[Info 14:50:48.359] Running Banshee 2.2.0: [Ubuntu 11.10 (linux-gnu, x86_64) @ 2011-10-31 19:36:13 UTC]
[Info 14:50:49.058] Updating web proxy from GConf
[Info 14:50:49.164] All services are started 0,654819
[Info 14:50:49.719] AmazonMP3 store redirect URL: https://one.ubuntu.com/music/store/amz/
** (Banshee:2528): DEBUG: SyncDaemon already running, initializing SyncdaemonDaemon object

(Banshee:2528): libsoup-WARNING **: No feature manager for feature of type 'U1RequestChrome'

(Banshee:2528): Gtk-CRITICAL **: IA__gtk_widget_hide: assertion `GTK_IS_WIDGET (widget)' failed
** (Banshee:2528): DEBUG: Loading the real store page
[Info 14:50:51.367] nereid Client Started
[Info 14:50:51.420] GStreamer version 0.10.35.0, gapless: True, replaygain: False
[Info 14:50:51.654] AppleDeviceSource is ignoring unmounted volume 11 GB-Dateisystem

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 Banshee.WebSource.WebSource.Activate () [0x00000] in <filename unknown>:0
  at Banshee.Sources.SourceManager.SetActiveSource (Banshee.Sources.Source source, Boolean notify) [0x00000] in <filename unknown>:0
  at Banshee.Sources.SourceManager.SetActiveSource (Banshee.Sources.Source source) [0x00000] in <filename unknown>:0
  at Banshee.Sources.Gui.SourceView.OnButtonPressEvent (Gdk.EventButton press) [0x00000] in <filename unknown>:0
  at Gtk.Widget.buttonpressevent_cb (IntPtr widget, IntPtr evnt) [0x00000] in <filename unknown>:0
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at Gtk.Widget.buttonpressevent_cb(IntPtr widget, IntPtr evnt)
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at Banshee.Gui.GtkBaseClient.Run()
   at Banshee.Gui.GtkBaseClient.Startup()
   at Hyena.Gui.CleanRoomStartup.Startup(Hyena.Gui.StartupInvocationHandler startup)
   at Banshee.Gui.GtkBaseClient.Startup()
   at Banshee.Gui.GtkBaseClient.Startup(System.String[] args)
   at Nereid.Client.Main(System.String[] args)
   at System.AppDomain.ExecuteAssembly(System.AppDomain , System.Reflection.Assembly , System.String[] )
   at System.AppDomain.ExecuteAssemblyInternal(System.Reflection.Assembly a, System.String[] args)
   at System.AppDomain.ExecuteAssembly(System.String assemblyFile, System.Security.Policy.Evidence assemblySecurity, System.String[] args)
   at System.AppDomain.ExecuteAssembly(System.String assemblyFile)
   at Booter.Booter.BootClient(System.String clientName)
   at Booter.Booter.Main()

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Gareth Williams (gareththered)]

I get the same when I click on 'Miro Guide' as well as 'Amazon'. Also, my CPU usage shows approx 300% (Intel i5 core) until I kill banshee.

[dobey (dobey)]

I've marked this a duplicate of bug #882732 as this seems to be a result of the patch there which was uploaded to oneiric-proposed, and has been tagged as verification-failed in that bug. You can downgrade back to the version in the Ubuntu main archive while this is being resolved. Version 2.2.1 was released recently, and should appear in oneiric-proposed soon.