diff --git a/.classpath b/.classpath
index b505001f..f22b5e20 100644
--- a/.classpath
+++ b/.classpath
@@ -8,7 +8,12 @@
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="src" output="target/test-classes" path="target/generated-test-sources2">
+	<classpathentry excluding="test-annotations/|target/generated-test-sources/test-annotations/" kind="src" output="target/classes2" path="target/generated-test-sources">
+		<attributes>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/test-classes2" path="target/generated-test-sources2">
 		<attributes>
 			<attribute name="ignore_optional_problems" value="true"/>
 			<attribute name="test" value="true"/>
@@ -42,7 +47,7 @@
 			<attribute name="optional" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="src" output="target/test-classes" path="target/generated-test-sources/test-annotations">
+	<classpathentry kind="src" output="target/classes2" path="target/generated-test-sources/test-annotations">
 		<attributes>
 			<attribute name="optional" value="true"/>
 			<attribute name="test" value="true"/>
diff --git a/src/org/rascalmpl/core/library/lang/rascalcore/check/AType.rsc b/src/org/rascalmpl/core/library/lang/rascalcore/check/AType.rsc
index f5ce6708..46f84c08 100644
--- a/src/org/rascalmpl/core/library/lang/rascalcore/check/AType.rsc
+++ b/src/org/rascalmpl/core/library/lang/rascalcore/check/AType.rsc
@@ -154,7 +154,7 @@ bool asubtype(adt:aadt(str n, list[AType] l, SyntaxRole sr), AType b){
         case aadt(n, list[AType] r, _):
             return asubtypeList(l, r);
         case aadt("Tree", _, _):
-            /*if(isConcreteSyntaxRole(sr))*/ return true;
+            if(isConcreteSyntaxRole(sr)) return true;
         case \start(AType t):
             if(isConcreteSyntaxRole(sr)) return asubtype(adt, t);
     }
diff --git a/src/org/rascalmpl/core/library/lang/rascalcore/check/ATypeUtils.rsc b/src/org/rascalmpl/core/library/lang/rascalcore/check/ATypeUtils.rsc
index 15a3ca92..5de7063f 100644
--- a/src/org/rascalmpl/core/library/lang/rascalcore/check/ATypeUtils.rsc
+++ b/src/org/rascalmpl/core/library/lang/rascalcore/check/ATypeUtils.rsc
@@ -1425,11 +1425,6 @@ bool isIterType(AType::\iter-star-seps(_,_)) = true;
 bool isIterType(AType::\opt(_)) = true;
 default bool isIterType(AType _) = false; 
 
-bool isIterStarType(aparameter(_,AType tvb)) = isIterStarType(tvb);
-bool isIterStarType(AType::\iter-star(_)) = true;
-bool isIterStarType(AType::\iter-star-seps(_,_)) = true;
-default bool isIterStarType(AType _) = false;       
-
 AType getIterElementType(aparameter(_,AType tvb)) = getIterElementType(tvb);
 AType getIterElementType(AType::\iter(AType i)) = i;
 AType getIterElementType(AType::\iter-star(AType i)) = i;
diff --git a/src/org/rascalmpl/core/library/lang/rascalcore/check/CollectType.rsc b/src/org/rascalmpl/core/library/lang/rascalcore/check/CollectType.rsc
index dfa1be68..b019e38d 100644
--- a/src/org/rascalmpl/core/library/lang/rascalcore/check/CollectType.rsc
+++ b/src/org/rascalmpl/core/library/lang/rascalcore/check/CollectType.rsc
@@ -567,6 +567,10 @@ bool isIterSym((Sym) `{ <Sym symbol> <Sym sep> }+`) = true;
 bool isIterSym((Sym) `{ <Sym symbol> <Sym sep> }*`) = true;
 default bool isIterSym(Sym sym) = false;
 
+bool isIterStarSym((Sym) `<Sym symbol>*`) = true;
+bool isIterStarSym((Sym) `{ <Sym symbol> <Sym sep> }*`) = true;
+default bool isIterStarSym(Sym sym) = false;
+
 
 bool isLexicalContext(Collector c){
     adtStack = c.getStack(currentAdt);
diff --git a/src/org/rascalmpl/core/library/lang/rascalcore/compile/Examples/Tst6.rsc b/src/org/rascalmpl/core/library/lang/rascalcore/compile/Examples/Tst6.rsc
index a0bc1011..e565c503 100644
--- a/src/org/rascalmpl/core/library/lang/rascalcore/compile/Examples/Tst6.rsc
+++ b/src/org/rascalmpl/core/library/lang/rascalcore/compile/Examples/Tst6.rsc
@@ -1,3 +1,5 @@
 module lang::rascalcore::compile::Examples::Tst6
 
-value main() = 1;
\ No newline at end of file
+data Content 
+  = content(str id, str title=id)
+  ;
\ No newline at end of file