Im getting similar issue i guess: $ lat lat [25905] INFO Starting lat (version 1.2.3) lat [25905] WARN Unable to get password from GNOME keyring. Got result: 9 (lat:25905): Gtk-WARNING **: gtk_menu_attach_to_widget(): menu already attached to GtkImageMenuItem (lat:25905): GLib-GObject-WARNING **: invalid (NULL) pointer instance (lat:25905): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed (lat:25905): GLib-GObject-WARNING **: invalid (NULL) pointer instance (lat:25905): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed (lat:25905): GLib-GObject-CRITICAL **: g_object_add_weak_pointer: assertion `G_IS_OBJECT (object)' failed (lat:25905): Gtk-WARNING **: gtk_menu_detach(): menu is not attached (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-WARNING **: gtk_menu_attach_to_widget(): menu already attached to GtkImageMenuItem (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-WARNING **: gtk_menu_detach(): menu is not attached (lat:25905): Gtk-WARNING **: gtk_menu_attach_to_widget(): menu already attached to GtkImageMenuItem (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-WARNING **: gtk_menu_detach(): menu is not attached (lat:25905): Gtk-WARNING **: gtk_menu_attach_to_widget(): menu already attached to GtkImageMenuItem (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-WARNING **: gtk_menu_detach(): menu is not attached (lat:25905): Gtk-WARNING **: gtk_menu_attach_to_widget(): menu already attached to GtkImageMenuItem (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-WARNING **: gtk_menu_detach(): menu is not attached (lat:25905): Gtk-WARNING **: gtk_menu_attach_to_widget(): menu already attached to GtkImageMenuItem (lat:25905): Gtk-CRITICAL **: IA__gtk_scrolled_window_add_with_viewport: assertion `GTK_BIN (bin->child)->child == NULL' failed (lat:25905): Gtk-WARNING **: gtk_menu_detach(): menu is not attached (lat:25905): Gtk-WARNING **: gtk_menu_attach_to_widget(): menu already attached to GtkImageMenuItem (lat:25905): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated [CRASH HAPPENS HERE] Marshaling clicked 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.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary. at System.Collections.Generic.Dictionary`2[System.String,Novell.Directory.Ldap.LdapEntry].get_Item (System.String key) [0x00000] in :0 at lat.NewUserViewDialog.getGidNumber (System.String name) [0x00000] in :0 at lat.NewUserViewDialog.CreateEntry (System.String dn) [0x00000] in :0 at lat.NewUserViewDialog.OnOkClicked (System.Object o, System.EventArgs args) [0x00000] in :0 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] 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.Dialog.gtk_dialog_run(IntPtr ) at Gtk.Dialog.Run() at lat.NewUserViewDialog..ctor(lat.Connection connection, System.String newContainer, System.Collections.Generic.Dictionary`2 defaultValues) at lat.PosixUserViewPlugin.OnAddEntry(lat.Connection conn) at lat.ViewDataTreeView.ShowNewItemDialog(System.String viewName) at lat.MainWindow.OnNewMenuItemActivate(System.Object o, System.EventArgs args) at System.Reflection.MonoMethod.InternalInvoke(System.Object , System.Object[] , System.Exception ByRef ) at System.Reflection.MonoMethod.Invoke(System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) at System.Reflection.MethodBase.Invoke(System.Object obj, System.Object[] parameters) at System.Delegate.DynamicInvokeImpl(System.Object[] args) at System.MulticastDelegate.DynamicInvokeImpl(System.Object[] args) at System.Delegate.DynamicInvoke(System.Object[] args) at GLib.Signal.ClosureInvokedCB(System.Object o, GLib.ClosureInvokedArgs args) at GLib.SignalClosure.Invoke(GLib.ClosureInvokedArgs args) 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 LdapAdministrationTool.Main(System.String[] args)