System.NullReferenceException: Object reference not set to an instance of an object
at MonoDevelop.Ide.Gui.ConfigurationComboBox.RefreshCombo (MonoDevelop.Projects.Combine) [0x0005a] in /home/radical/md/monodevelop/Core/src/MonoDevelop.Ide/MonoDevelop.Ide.Gui/ConfigurationComboBox.cs:71
at MonoDevelop.Ide.Gui.ConfigurationComboBox.OpenCombine (object,MonoDevelop.Projects.CombineEventArgs) [0x00000] in /home/radical/md/monodevelop/Core/src/MonoDevelop.Ide/MonoDevelop.Ide.Gui/ConfigurationComboBox.cs:83
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0003e>
at __CombineEventHandler_DelegateFactory.Dispatch (object) <0x00036>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object (object) <0x0002a>
at MonoDevelop.Core.Gui.GuiSyncContext.AsyncDispatch (MonoDevelop.Core.Gui.StatefulMessageHandler,object) [0x00027] in /home/radical/md/monodevelop/Core/src/MonoDevelop.Core.Gui/MonoDevelop.Core.Gui/GuiSyncContext.cs:34
at __CombineEventHandler_DelegateFactory.ProxyCall (object,MonoDevelop.Projects.CombineEventArgs) <0x0006f>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0003e>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0006e>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0006e>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0006e>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0006e>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0006e>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0006e>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0006e>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0006e>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_CombineEventArgs (object,MonoDevelop.Projects.CombineEventArgs) <0x0006e>
at MonoDevelop.Ide.Gui.ProjectOperations.OnCombineOpened (MonoDevelop.Projects.CombineEventArgs) [0x0000b] in /home/radical/md/monodevelop/Core/src/MonoDevelop.Ide/MonoDevelop.Ide.Gui/ProjectOperations.cs:1353
at <>c__CompilerGenerated20.<>c__AnonymousMethod21 (object,System.EventArgs) [0x00027] in /home/radical/md/monodevelop/Core/src/MonoDevelop.Ide/MonoDevelop.Ide.Gui/ProjectOperations.cs:371
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_EventArgs (object,System.EventArgs) <0x0003e>
at InvokeCB.Invoke () [0x00000] in /home/radical/w1/gtk-sharp/gtk/Application.cs:166
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_bool () <0x0002c>
at TimeoutProxy.Handler () [0x0000c] in /home/radical/w1/gtk-sharp/glib/Timeout.cs:42
at (wrapper native-to-managed) TimeoutProxy.Handler () <0x00036>
in (unmanaged) 0x4006bdd5
at (wrapper managed-to-native) Gtk.Application.gtk_main () <0x00004>
at Gtk.Application.Run () [0x00000] in /home/radical/w1/gtk-sharp/gtk/Application.cs:99
at MonoDevelop.Ide.Gui.IdeApp.Run () [0x00000] in /home/radical/md/monodevelop/Core/src/MonoDevelop.Ide/MonoDevelop.Ide.Gui/Ide.cs:172
at MonoDevelop.Ide.Gui.IdeStartup.Run (string[]) [0x00425] in /home/radical/md/monodevelop/Core/src/MonoDevelop.Ide/MonoDevelop.Ide.Gui/IdeStartup.cs:199
at MonoDevelop.Core.AddIns.AddInService.StartApplication (string,string[]) [0x00093] in /home/radical/md/monodevelop/Core/src/MonoDevelop.Core/MonoDevelop.Core.AddIns/AddInService.cs:127