diff --git a/.gitignore b/.gitignore
index 98aba88..549b265 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /.launch/
 /.settings/
+/RV32GC.json
diff --git a/com.minres.coredsl.json.target/com.minres.coredsl.json.target.target b/com.minres.coredsl.json.target/com.minres.coredsl.json.target.target
index 79fb4c3..264f25a 100644
--- a/com.minres.coredsl.json.target/com.minres.coredsl.json.target.target
+++ b/com.minres.coredsl.json.target/com.minres.coredsl.json.target.target
@@ -39,7 +39,7 @@
             <unit id="org.json" version="1.0.0.v201011060100"/>
         </location>
     	<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
-        	<repository location="https://minres.github.io/CoreDSL/repository/2.0/2.0.14"/>
+        	<repository location="https://minres.github.io/CoreDSL/repository/2.0/2.0.17"/>
 	    	<unit id="com.minres.coredsl.feature.source.feature.group" version="0.0.0"/>
         	<unit id="com.minres.coredsl.feature.feature.group" version="0.0.0"/>
     	</location>
diff --git a/com.minres.coredsl.json/src/com/minres/coredsl/json/CoreDslJsonGenerator.xtend b/com.minres.coredsl.json/src/com/minres/coredsl/json/CoreDslJsonGenerator.xtend
index a475b58..59bbde7 100644
--- a/com.minres.coredsl.json/src/com/minres/coredsl/json/CoreDslJsonGenerator.xtend
+++ b/com.minres.coredsl.json/src/com/minres/coredsl/json/CoreDslJsonGenerator.xtend
@@ -45,7 +45,7 @@ class CoreDslJsonGenerator extends AbstractGenerator {
 	}
 	def JSONArray compile(CoreDef coreDef) {
 		val insts = coreDef.allInstr
-		val enabled_insts = insts.filter[it.isHls]
+		val enabled_insts = insts//.filter[it.isHls]
 		val res = enabled_insts.map[ inst |	inst.jsonDescr ].toList
 		return res.length>0?new JSONArray(res) :new JSONArray()
 	}
@@ -60,7 +60,11 @@ class CoreDslJsonGenerator extends AbstractGenerator {
 	}
 	
 	def String getSource(Statement stmt){
-        (stmt.eResource as XtextResource).serializer.serialize(stmt)
+		try {
+			(stmt.eResource as XtextResource).serializer.serialize(stmt)
+		} catch(RuntimeException e){
+        	"" 
+        }
 	}
 	
 	def Iterable<Instruction> allInstr(CoreDef core) {
diff --git a/com.minres.coredsl.json/src/com/minres/coredsl/json/Main.xtend b/com.minres.coredsl.json/src/com/minres/coredsl/json/Main.xtend
index f159797..c6072e7 100644
--- a/com.minres.coredsl.json/src/com/minres/coredsl/json/Main.xtend
+++ b/com.minres.coredsl.json/src/com/minres/coredsl/json/Main.xtend
@@ -28,6 +28,7 @@ import org.eclipse.xtext.generator.IFileSystemAccess
 import java.lang.reflect.MalformedParametersException
 import org.apache.log4j.Level
 import org.eclipse.emf.ecore.resource.Resource
+import org.eclipse.xtext.diagnostics.Severity
 
 class Main implements Callable<Integer> {
 
@@ -83,10 +84,17 @@ class GeneratorMain {
                 val resource = resourceSet.getResource(URI.createFileURI(file.absolutePath), true)
                 // Validate the resource
                 val issues = validator.validate(resource, CheckMode.ALL, CancelIndicator.NullImpl)
-                if (!issues.empty) {
-                    logger.error("Error validating " + resource.URI)
-                    issues.forEach[logger.error(it)]
-                    throw new ParseException("error validating " + resource.URI)
+               if (!issues.empty) {
+                    val errors = issues.filter[it.severity == Severity.ERROR]
+                    val warnings = issues.filter[it.severity == Severity.WARNING]
+                    if (!errors.empty) {
+                        logger.error("Error validating " + resource.URI)
+                        issues.forEach[logger.error(it)]
+                        throw new ParseException("error validating " + resource.URI)
+                    } else if (!warnings.empty) {
+                        logger.warn("There are warnings validating " + resource.URI)
+                        issues.forEach[logger.warn(it)]
+                    }
                 }
                 // Configure and start the generator
                 resource.runGenerator(params.outputFile)