Loading grammar from MGrammar problem

using (Stream stream = this.GetType().Assembly.GetManifestResourceStream("NewLang.RBL.mx"))
            {   
                //Here I get parser == null I checked couple of times and in Intellipad
                //when I define that language name is correct - rally annoying
                DynamicParser parser = DynamicParser.LoadFromStream(stream, "Langauges.RBL");

                IHighlightingStyleRegistry registry = AmbientHighlightingStyleRegistry.Instance;
                registry.Register(ClassificationTypes.Comment, new HighlightingStyle("Comment", Brushes.Green));
                registry.Register(new ClassificationType("Delimiter"), new HighlightingStyle("Delimiter", Brushes.SlateBlue));
                registry.Register(ClassificationTypes.Identifier, new HighlightingStyle("Identifier", null));
                registry.Register(ClassificationTypes.Keyword, new HighlightingStyle("Keyword", Brushes.Blue));
                registry.Register(new ClassificationType("Number"), new HighlightingStyle("Number", Brushes.Purple));

                
                SyntaxLanguage language = new SyntaxLanguage("RBL");
                language.LexicalParser = new DataflowLexicalParser(parser);
                language.ClassifierFactory = new DataflowClassifierFactory(parser, registry);

                this.syntaxEditor.Document.Language = language;
            }