- report an user understandable error message when trying to instanti…

…ate or check an model that does not exists.

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@11522 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Compiler/Script/CevalScript.mo

@@ -1332,8 +1332,9 @@ algorithm
       equation
         cr_1 = Absyn.pathToCref(className);
         false = Interactive.existClass(cr_1, p);
+        str = "Unknown model in instantiateModel: " +& Absyn.pathString(className) +& "\n";
       then
-        (cache,Values.STRING("Unknown model.\n"),st);
+        (cache,Values.STRING(str),st);
 
     case (cache,env,"instantiateModel",{Values.CODE(Absyn.C_TYPENAME(path))},st,msg)
       equation
@@ -3639,6 +3640,14 @@ algorithm
       then
         (cache,Values.STRING(retStr),st);
 
+    case (cache,env,className,st as Interactive.SYMBOLTABLE(ast=p), _)
+      equation
+        classNameStr = Absyn.pathString(className);
+        false = Interactive.existClass(Absyn.pathToCref(className), p);
+        errorMsg = "Unknown model in checkModel: " +& classNameStr +& "\n";
+      then
+        (cache,Values.STRING(errorMsg),st);
+
     // errors
     case (cache,env,className,st,_)
       equation