Initialize all the colors for semantic highlighting.

src/AddIns/BackendBindings/CSharpBinding/Project/Resources/CSharp-Semantic.xshd

@@ -36,6 +36,7 @@
 	<Color name="MethodCall" foreground="MidnightBlue" fontWeight="bold" exampleText="o.#{#ToString#}#();"/>
 	<Color name="FieldAccess" fontStyle="italic" exampleText="return this.#{#name#}#;"/>
 	<Color name="InactiveCode" foreground="Gray" exampleText="#{#Deactivated by #if#}#"/>
+	<Color name="SemanticError" foreground="DarkRed" exampleText="o.#{#MissingMethod#}#()"/>
 	
 	<RuleSet name="CommentMarkerSet">
 		<Keywords fontWeight="bold" foreground="Red">

src/AddIns/BackendBindings/CSharpBinding/Project/Src/CSharpSemanticHighlighter.cs

@@ -47,11 +47,23 @@ namespace CSharpBinding
 			//this.defaultTextColor = ???;
 			this.referenceTypeColor = highlighting.GetNamedColor("ReferenceTypes");
 			this.valueTypeColor = highlighting.GetNamedColor("ValueTypes");
-			this.methodCallColor = highlighting.GetNamedColor("MethodCall");
-			this.fieldAccessColor = highlighting.GetNamedColor("FieldAccess");
+			this.interfaceTypeColor = this.referenceTypeColor;
+			this.enumerationTypeColor = this.valueKeywordColor;
+			this.typeParameterTypeColor = this.referenceTypeColor;
+			this.delegateTypeColor = this.referenceTypeColor;
+			
+			this.methodDeclarationColor = this.methodCallColor = highlighting.GetNamedColor("MethodCall");
+			//this.eventDeclarationColor = this.eventAccessColor = defaultTextColor;
+			//this.propertyDeclarationColor = this.propertyAccessColor = defaultTextColor;
+			this.fieldDeclarationColor = this.fieldAccessColor = highlighting.GetNamedColor("FieldAccess");
+			//this.variableDeclarationColor = this.variableAccessColor = defaultTextColor;
+			//this.parameterDeclarationColor = this.parameterAccessColor = defaultTextColor;
 			this.valueKeywordColor = highlighting.GetNamedColor("NullOrValueKeywords");
+			//this.externAliasKeywordColor = ...;
+			
 			this.parameterModifierColor = highlighting.GetNamedColor("ParameterModifiers");
 			this.inactiveCodeColor = highlighting.GetNamedColor("InactiveCode");
+			this.syntaxErrorColor = highlighting.GetNamedColor("SemanticError");
 			
 			if (document is TextDocument && SD.MainThread.CheckAccess()) {
 				// Use the cache only for the live AvalonEdit document

src/Main/Base/Project/Src/Project/AbstractProject.cs

@@ -46,7 +46,6 @@ namespace ICSharpCode.SharpDevelop.Project
 			this.Name = information.ProjectName;
 			this.FileName = information.FileName;
 			this.idGuid = (information.IdGuid != Guid.Empty ? information.IdGuid : Guid.NewGuid());
-			Debug.Assert(information.TypeGuid != Guid.Empty);
 			this.TypeGuid = information.TypeGuid;
 			if (information.ProjectSections != null)
 				this.projectSections.AddRange(information.ProjectSections);