Created attachment 176222 [details]
Test case, reduced size

Not sure if this is an taglib issue. It seems to be involved looking at the 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 FSpot.Widgets.InfoBox.<SetupWidgets>m__4D (IPhoto photo, TagLib.Image.File metadata) [0x00000] in <filename unknown>:0 
  at FSpot.Widgets.InfoBox+<AddLabelEntry>c__AnonStoreyE.<>m__43 (Gtk.Widget widget, IPhoto photo, TagLib.Image.File metadata) [0x00000] in <filename unknown>:0 
  at FSpot.Widgets.InfoBox.Update () [0x00000] in <filename unknown>:0 
  at FSpot.Utils.DelayedOperation.HandleOperation () [0x00000] in <filename unknown>:0 
  at GLib.Idle+IdleProxy.Handler () [0x00000] in <filename unknown>:0 
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at GLib.Idle+IdleProxy.Handler()
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at FSpot.Driver.Startup()
   at Hyena.Gui.CleanRoomStartup.Startup(Hyena.Gui.StartupInvocationHandler startup)
   at FSpot.Driver.Main(System.String[] args)