Unhandled Exception:
System.ArgumentException: cname is not in NamespaceType format. GType.Register should be called directly for gdouble
  at GLib.GType.GetQualifiedName (System.String cname) [0x00000] in <filename unknown>:0
  at GLib.GType.LookupType (IntPtr typeid) [0x00000] in <filename unknown>:0
  at GLib.ObjectManager.GetTypeOrParent (IntPtr obj) [0x00000] in <filename unknown>:0
  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.FileAdapter.Dispose () [0x00000] in <filename unknown>:0
  at GLib.FileAdapter.Finalize () [0x00000] in <filename unknown>:0