Unhandled Exception: System.InvalidCastException: Cannot cast from source type to destination type. in <0x00062> Landell.Widgets.BuddyListWindow:BuddyTreeSearchEqualFunc (Gtk.TreeModel,int,string,Gtk.TreeIter) in <0x0008a> (wrapper delegate-invoke) System.MulticastDelegate:invoke_bool_TreeModel_int_string_TreeIter (Gtk.TreeModel,int,string,Gtk.TreeIter) in <0x00101> GtkSharp.TreeViewSearchEqualFuncWrapper:NativeCallback (intptr,int,intptr,Gtk.TreeIter&,intptr) in <0x00045> (wrapper native-to-managed) GtkSharp.TreeViewSearchEqualFuncWrapper:NativeCallback (intptr,int,intptr,Gtk.TreeIter&,intptr) in (unmanaged) 0xb6f5717b in <0x00004> (wrapper managed-to-native) Gtk.Application:gtk_main_iteration () in <0x00007> Gtk.Application:RunIteration () in <0x0000c> Landell.Widgets.LandellWindow:OnDestroyed (object,System.EventArgs) in <0x00041> (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_object_DeleteEventArgs (object,Gtk.DeleteEventArgs) in <0x000f6> Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in <0x00038> (wrapper native-to-managed) Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in (unmanaged) 0xb6e898df in <0x00004> (wrapper managed-to-native) Gtk.Application:gtk_main_iteration () in <0x00007> Gtk.Application:RunIteration () in <0x0000c> Landell.Widgets.LandellWindow:OnDestroyed (object,System.EventArgs) in <0x00041> (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_object_DeleteEventArgs (object,Gtk.DeleteEventArgs) in <0x000f6> Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in <0x00038> (wrapper native-to-managed) Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in (unmanaged) 0xb6e898df in <0x00004> (wrapper managed-to-native) Gtk.Application:gtk_main_iteration () in <0x00007> Gtk.Application:RunIteration () in <0x0000c> Landell.Widgets.LandellWindow:OnDestroyed (object,System.EventArgs) in <0x00041> (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_object_DeleteEventArgs (object,Gtk.DeleteEventArgs) in <0x000f6> Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in <0x00038> (wrapper native-to-managed) Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in (unmanaged) 0xb6e898df in <0x00004> (wrapper managed-to-native) Gtk.Application:gtk_main_iteration () in <0x00007> Gtk.Application:RunIteration () in <0x0000c> Landell.Widgets.LandellWindow:OnDestroyed (object,System.EventArgs) in <0x00041> (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_object_DeleteEventArgs (object,Gtk.DeleteEventArgs) in <0x000f6> Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in <0x00038> (wrapper native-to-managed) Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in (unmanaged) 0xb6e898df in <0x00004> (wrapper managed-to-native) Gtk.Application:gtk_main_iteration () in <0x00007> Gtk.Application:RunIteration () in <0x0000c> Landell.Widgets.LandellWindow:OnDestroyed (object,System.EventArgs) in <0x00041> (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_object_DeleteEventArgs (object,Gtk.DeleteEventArgs) in <0x000f6> Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in <0x00038> (wrapper native-to-managed) Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in (unmanaged) 0xb6e898df in <0x00004> (wrapper managed-to-native) Gtk.Application:gtk_main_iteration () in <0x00007> Gtk.Application:RunIteration () in <0x0000c> Landell.Widgets.LandellWindow:OnDestroyed (object,System.EventArgs) in <0x00041> (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_object_DeleteEventArgs (object,Gtk.DeleteEventArgs) in <0x000f6> Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in <0x00038> (wrapper native-to-managed) Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in (unmanaged) 0xb6e898df in <0x00004> (wrapper managed-to-native) Gtk.Application:gtk_main_iteration () in <0x00007> Gtk.Application:RunIteration () in <0x0000c> Landell.Widgets.LandellWindow:OnDestroyed (object,System.EventArgs) in <0x00041> (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_object_DeleteEventArgs (object,Gtk.DeleteEventArgs) in <0x000f6> Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in <0x00038> (wrapper native-to-managed) Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in (unmanaged) 0xb6e898df in <0x00004> (wrapper managed-to-native) Gtk.Application:gtk_main_iteration () in <0x00007> Gtk.Application:RunIteration () in <0x0000c> Landell.Widgets.LandellWindow:OnDestroyed (object,System.EventArgs) in <0x00041> (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_object_DeleteEventArgs (object,Gtk.DeleteEventArgs) in <0x000f6> Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in <0x00038> (wrapper native-to-managed) Gtk.Widget:DeleteEventSignalCallback (intptr,intptr,intptr) in (unmanaged) 0xb6e898df in <0x00004> (wrapper managed-to-native) Gtk.Application:gtk_main () in <0x00007> Gtk.Application:Run () in <0x0003b> MainClass:Main (string[])