I just had this one. I thought we fixed SourceRowRenderer a while back for these?

Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
GLib.MissingIntPtrCtorException: GLib.Object subclass Banshee.Sources.Gui.SourceRowRenderer must provide a protected or public IntPtr ctor to support wrapping of native object handles.
  at GLib.ObjectManager.CreateObject (IntPtr raw) [0x00000] in <filename unknown>:0 
  at GLib.Object.GetObject (IntPtr o, Boolean owned_ref) [0x00000] in <filename unknown>:0 
  at GLib.Object.GetObject (IntPtr o) [0x00000] in <filename unknown>:0 
  at GtkSharp.CellLayoutDataFuncWrapper.NativeCallback (IntPtr cell_layout, IntPtr cell, IntPtr tree_model, IntPtr iter, IntPtr data) [0x00000] in <filename unknown>:0 
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at GtkSharp.CellLayoutDataFuncWrapper.NativeCallback(IntPtr cell_layout, IntPtr cell, IntPtr tree_model, IntPtr iter, IntPtr data)
   at Gtk.Widget.gtksharp_widget_base_expose_event(IntPtr , IntPtr )
   at Gtk.Widget.OnExposeEvent(Gdk.EventExpose evnt)
   at Banshee.Sources.Gui.SourceView.OnExposeEvent(Gdk.EventExpose evnt) in /home/david/Projekter/banshee/src/Core/Banshee.ThickClient/Banshee.Sources.Gui/SourceView.cs:line 343
   at Gtk.Widget.exposeevent_cb(IntPtr widget, IntPtr evnt)
   at Gtk.Dialog.gtk_dialog_run(IntPtr )
   at Gtk.Dialog.Run()
   at Banshee.Dap.DapPropertiesDialog.RunDialog() in /home/david/Projekter/banshee/src/Dap/Banshee.Dap/Banshee.Dap.Gui/DapPropertiesDialog.cs:line 134
   at Banshee.Dap.DapSource.<Initialize>m__E() in /home/david/Projekter/banshee/src/Dap/Banshee.Dap/Banshee.Dap/DapSource.cs:line 178
   at Banshee.Gui.SourceActions.OnSourceProperties(System.Object o, System.EventArgs args) in /home/david/Projekter/banshee/src/Core/Banshee.ThickClient/Banshee.Gui/SourceActions.cs:line 320
   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 Banshee.Gui.GtkBaseClient.Run() in /home/david/Projekter/banshee/src/Core/Banshee.ThickClient/Banshee.Gui/GtkBaseClient.cs:line 205
   at Banshee.Gui.GtkBaseClient.Startup() in /home/david/Projekter/banshee/src/Core/Banshee.ThickClient/Banshee.Gui/GtkBaseClient.cs:line 82
   at Hyena.Gui.CleanRoomStartup.Startup(Hyena.Gui.StartupInvocationHandler startup) in /home/david/Projekter/banshee/src/Hyena/Hyena.Gui/Hyena.Gui/CleanRoomStartup.cs:line 54
   at Banshee.Gui.GtkBaseClient.Startup() in /home/david/Projekter/banshee/src/Core/Banshee.ThickClient/Banshee.Gui/GtkBaseClient.cs:line 77
   at Banshee.Gui.GtkBaseClient.Startup(System.String[] args) in /home/david/Projekter/banshee/src/Core/Banshee.ThickClient/Banshee.Gui/GtkBaseClient.cs:line 67
   at Nereid.Client.Main(System.String[] args) in /home/david/Projekter/banshee/src/Clients/Nereid/Nereid/Client.cs:line 54
   at System.AppDomain.ExecuteAssembly(System.Reflection.Assembly , System.String[] )
   at System.AppDomain.ExecuteAssemblyInternal(System.Reflection.Assembly a, System.String[] args)
   at System.AppDomain.ExecuteAssembly(System.String assemblyFile, System.Security.Policy.Evidence assemblySecurity, System.String[] args)
   at System.AppDomain.ExecuteAssembly(System.String assemblyFile)
   at Booter.Booter.BootClient(System.String clientName) in /home/david/Projekter/banshee/src/Clients/Booter/Booter/Entry.cs:line 112
   at Booter.Booter.Main() in /home/david/Projekter/banshee/src/Clients/Booter/Booter/Entry.cs:line 105