Unhandled Exception: Glade.HandlerNotFoundException: The handler for the event Response should take '(System.Object,Gtk.ResponseArgs)', but the signature of the provided handler ('OnWindowResponse') is '(System.Object,System.EventArgs)'

at SignalConnector.ConnectFunc (intptr,intptr,intptr,intptr,intptr,int,intptr) <0x0033f>
at (wrapper native-to-managed) SignalConnector.ConnectFunc (intptr,intptr,intptr,intptr,intptr,int,intptr) <0x0004b>
in (unmanaged) 0xb634b92b
at (wrapper managed-to-native) SignalConnector.glade_xml_signal_autoconnect_full (intptr,Glade.XML/SignalConnector/RawXMLConnectFunc,intptr) <0x00004>
at SignalConnector.Autoconnect () <0x00059>
at Glade.XML.Autoconnect (object) <0x00042>
at Muine.ProgressWindow..ctor (Gtk.Window) <0x00043>
at AddFoldersThread..ctor (System.Collections.ArrayList) <0x0006c>
at Muine.SongDatabase.AddWatchedFolders (System.Collections.ArrayList) <0x001db>
at Muine.ImportDialog.OnResponse (object,Gtk.ResponseArgs) <0x00162>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_ResponseArgs (object,Gtk.ResponseArgs) <0x0003e>
at Gtk.Dialog.ResponseSignalCallback (intptr,int,intptr) <0x000ff>
at (wrapper native-to-managed) Gtk.Dialog.ResponseSignalCallback (intptr,int,intptr) <0x00038>
in (unmanaged) 0xb6baa18a
at (wrapper managed-to-native) Gtk.Application.gtk_main () <0x00004>
at Gtk.Application.Run () <0x00007>
at Muine.Global.Main (string[]) <0x00573>