I have exactly the same behaviour. When I choose "Photo / Export to / folder" or "Photo/ export to / any other choice"then f-sport crashes immediately with the following error which seems to be the same error as Florian posted above. 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.NullReferenceException: Object reference not set to an instance of an object at FSpot.Extensions.ExportMenuItemNode.OnActivated (System.Object o, System.EventArgs e) [0x00000] in :0 at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,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] in :0 --- 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] in :0 at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in :0 at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x00000] in :0 at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) [0x00000] in :0 at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000] in :0 at GLib.Signal.ClosureInvokedCB (System.Object o, GLib.ClosureInvokedArgs args) [0x00000] in :0 at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs args) [0x00000] in :0 at GLib.SignalClosure.MarshalCallback (IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data) [0x00000] in :0 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 FSpot.Driver.Startup() at Hyena.Gui.CleanRoomStartup.Startup(Hyena.Gui.StartupInvocationHandler startup) at FSpot.Driver.Main(System.String[] args) (f-spot:1222): GLib-CRITICAL **: Source ID 131 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 297 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 279 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 285 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 60 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 133 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 286 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 294 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 61 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 189 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 288 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 290 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 295 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 277 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 284 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 45 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 291 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 293 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 62 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 195 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 193 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 63 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 283 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 289 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 287 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 282 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 59 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 292 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 280 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 296 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 64 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 281 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 65 was not found when attempting to remove it (f-spot:1222): GLib-CRITICAL **: Source ID 130 was not found when attempting to remove it