f-spot crashes without explanation on Photo / Export to / Web Gallery

Binary package hint: f-spot

When selecting a photo and clicking Photo / Export to / Web Gallery, f-spot closes without explanation.

Here is the terminal scrollback if I open f-spot from a terminal window:

matt@dolce:~$ f-spot
[Info 08:41:33.544] Initializing DBus
[Info 08:41:33.832] Initializing Mono.Addins
[Info 08:41:34.275] Starting new FSpot server
[Info 08:41:36.699] Starting BeagleService
[Info 08:41:36.699] Hack for gnome-settings-daemon engaged

(f-spot:28539): GdkPixbuf-WARNING **: GdkPixbufLoader finalized without calling gdk_pixbuf_loader_close() - this is not allowed. You must explicitly end the data stream to the loader before dropping the last reference.
Gallery created: GalleryRemote.Gallery2
Gallery2: Attempting to login
StatusText : Login successful.
System.Net.WebException: Unhandled exception ---> System.Net.WebException: The remote server returned an error: (500) Internal Server Error.
  at System.Net.HttpWebRequest.CheckFinalStatus (System.Net.WebAsyncResult result) [0x00000]
  at System.Net.HttpWebRequest.SetResponseData (System.Net.WebConnectionData data) [0x00000]
  --- End of inner exception stack trace ---
  at FSpot.FormClient.Submit (System.Uri uri, FSpot.ProgressItem progress_item) [0x00000]
  at FSpot.FormClient.Submit (System.Uri uri) [0x00000]
  at GalleryRemote.Gallery2.FetchAlbumsPrune () [0x00000]
  at GalleryRemote.Gallery2.FetchAlbums () [0x00000]
  at G2Export.GalleryExport.PopulateAlbumOptionMenu (GalleryRemote.Gallery gallery) [0x00000]
  at G2Export.GalleryExport.Connect (G2Export.GalleryAccount selected) [0x00000]
Marshaling activate signal
Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Net.WebException: Unhandled exception ---> System.Net.WebException: The remote server returned an error: (500) Internal Server Error.
  at System.Net.HttpWebRequest.CheckFinalStatus (System.Net.WebAsyncResult result) [0x00000]
  at System.Net.HttpWebRequest.SetResponseData (System.Net.WebConnectionData data) [0x00000]
  --- End of inner exception stack trace ---
  at FSpot.FormClient.Submit (System.Uri uri, FSpot.ProgressItem progress_item) [0x00000]
  at FSpot.FormClient.Submit (System.Uri uri) [0x00000]
  at GalleryRemote.Gallery2.FetchAlbumsPrune () [0x00000]
  at GalleryRemote.Gallery2.FetchAlbums () [0x00000]
  at G2Export.GalleryExport.PopulateAlbumOptionMenu (GalleryRemote.Gallery gallery) [0x00000]
  at G2Export.GalleryExport.Connect (G2Export.GalleryAccount selected) [0x00000]
  at G2Export.GalleryExport.Connect () [0x00000]
  at G2Export.GalleryExport.Run (IBrowsableCollection selection) [0x00000]
  at FSpot.Extensions.ExportMenuItemNode.OnActivated (System.Object o, System.EventArgs e) [0x00000]
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000]
  --- End of inner exception stack trace ---
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000]
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000]
  at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x00000]
  at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) [0x00000]
  at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000]
  at GLib.Signal.ClosureInvokedCB (System.Object o, GLib.ClosureInvokedArgs args) [0x00000]
  at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs args) [0x00000]
  at GLib.SignalClosure.MarshalCallback (IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data) [0x00000]
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at GLib.SignalClosure.MarshalCallback(IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data)
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at Gnome.Program.Run()
   at FSpot.Driver.Main(System.String[] args)

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: nvidia
Package: f-spot 0.5.0.3-1ubuntu6
ProcEnviron:
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: f-spot
Uname: Linux 2.6.28-15-generic i686