diff --git a/jamopp.model/pom.xml b/jamopp.model/pom.xml
index 0544efd8..be426b54 100644
--- a/jamopp.model/pom.xml
+++ b/jamopp.model/pom.xml
@@ -66,6 +66,7 @@
                         </goals>
                         <configuration>
 							<instructions>
+								<Export-Package>tools.mdsd.*</Export-Package>
 								<Bundle-SymbolicName>${project.groupId}.${project.artifactId};singleton:=true</Bundle-SymbolicName>
 							</instructions>
 						</configuration>
diff --git a/jamopp.parser.jdt.singlefile/src/main/java/tools/mdsd/jamopp/parser/jdt/singlefile/JaMoPPJDTSingleFileParser.java b/jamopp.parser.jdt.singlefile/src/main/java/tools/mdsd/jamopp/parser/jdt/singlefile/JaMoPPJDTSingleFileParser.java
index c9f890d1..9303f548 100644
--- a/jamopp.parser.jdt.singlefile/src/main/java/tools/mdsd/jamopp/parser/jdt/singlefile/JaMoPPJDTSingleFileParser.java
+++ b/jamopp.parser.jdt.singlefile/src/main/java/tools/mdsd/jamopp/parser/jdt/singlefile/JaMoPPJDTSingleFileParser.java
@@ -27,8 +27,8 @@
 import java.util.List;
 import java.util.Map;
 
-import org.apache.logging.log4j.Logger;
-import org.apache.logging.log4j.LogManager;
+//import org.apache.logging.log4j.Logger;
+//import org.apache.logging.log4j.LogManager;
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.ecore.resource.ResourceSet;
@@ -52,8 +52,8 @@
 import tools.mdsd.jamopp.resolution.resolver.CentralReferenceResolver;
 
 public class JaMoPPJDTSingleFileParser implements JaMoPPParserAPI {
-	private static final Logger logger = LogManager.getLogger("jamopp."
-			+ JaMoPPJDTSingleFileParser.class.getSimpleName());
+//	private static final Logger logger = LogManager.getLogger("jamopp."
+//			+ JaMoPPJDTSingleFileParser.class.getSimpleName());
 	private final String DEFAULT_ENCODING = StandardCharsets.UTF_8.toString();
 	private ResourceSet resourceSet;
 	private ArrayList<String> exclusionPatterns = new ArrayList<>();
@@ -113,19 +113,19 @@ public ResourceSet parseDirectory(Path dir) {
 				encodings[index] = DEFAULT_ENCODING;
 			}
 			String[] classpathEntries = findClasspathEntries(dir);
-			logger.debug("Parsing the directory " + dir.toString() + " with "
-					+ sources.length + " source files and " + classpathEntries.length
-					+ " classpath entries.");
+//			logger.debug("Parsing the directory " + dir.toString() + " with "
+//					+ sources.length + " source files and " + classpathEntries.length
+//					+ " classpath entries.");
 			this.parseFilesWithJDT(classpathEntries, sources, encodings);
-			logger.debug("Resolving the parsed files.");
+//			logger.debug("Resolving the parsed files.");
 			resolveBindings();
 			resolveEverything();
-			logger.debug("Resolved the parsed files.");
+//			logger.debug("Resolved the parsed files.");
 		} catch (IOException e) {
 		}
 		ResourceSet result = this.resourceSet;
 		this.resourceSet = null;
-		logger.debug("Parsed the directory.");
+//		logger.debug("Parsed the directory.");
 		return result;
 	}
 	
@@ -254,7 +254,7 @@ public void resolveBindings() {
 	
 	private void resolveEverything() {
 		if (ParserOptions.RESOLVE_EVERYTHING.isTrue()) {
-			logger.debug("Resolving everything.");
+//			logger.debug("Resolving everything.");
 			int oldSize;
 			do {
 				oldSize = resourceSet.getResources().size();
diff --git a/jamopp.resource/src/main/java/tools/mdsd/jamopp/resource/JavaResource2.java b/jamopp.resource/src/main/java/tools/mdsd/jamopp/resource/JavaResource2.java
index 3915aba7..41bd8ecb 100644
--- a/jamopp.resource/src/main/java/tools/mdsd/jamopp/resource/JavaResource2.java
+++ b/jamopp.resource/src/main/java/tools/mdsd/jamopp/resource/JavaResource2.java
@@ -20,8 +20,8 @@
 import java.util.List;
 import java.util.Map;
 
-import org.apache.logging.log4j.Logger;
-import org.apache.logging.log4j.LogManager;
+//import org.apache.logging.log4j.Logger;
+//import org.apache.logging.log4j.LogManager;
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.EReference;
@@ -49,7 +49,7 @@
 
 public class JavaResource2 extends XMIResourceImpl {
 	public static final String JAVAXMI_FILE_EXTENSION = LogicalJavaURIGenerator.JAVAXMI_FILE_EXTENSION_NAME;
-	private static final Logger LOGGER = LogManager.getLogger("jamopp." + JavaResource2.class.getSimpleName());
+//	private static final Logger LOGGER = LogManager.getLogger("jamopp." + JavaResource2.class.getSimpleName());
 	private Map<String, IJavaContextDependentURIFragment> internalURIFragmentMap =
 			IJavaContextDependentURIFragmentCollector.GLOBAL_INSTANCE
 			.getContextDependentURIFragmentMap();
@@ -77,10 +77,10 @@ public void doLoad(InputStream input, Map<?, ?> options) throws IOException {
 			physicalURI = JavaClasspath.get(this).getURIMap().get(this.getURI());
 		}
 		if (physicalURI == null) {
-			LOGGER.error(this.getURI() + " has no physical URI.");
+//			LOGGER.error(this.getURI() + " has no physical URI.");
 			throw new IllegalStateException("There has to be a physical URI.");
 		}
-		LOGGER.debug("Loading " + physicalURI);
+//		LOGGER.debug("Loading " + physicalURI);
 		String extension = physicalURI.fileExtension();
 		if (extension.equals("class")) {
 			try {