diff --git a/org.moflon.core.feature/feature.xml b/org.moflon.core.feature/feature.xml
index ce9df3e5..b06fdbdd 100644
--- a/org.moflon.core.feature/feature.xml
+++ b/org.moflon.core.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.moflon.core.feature"
       label="eMoflon Core Components Feature"
-      version="1.3.2.qualifier"
+      version="1.3.3.qualifier"
       provider-name="eMoflon Developers"
       plugin="org.moflon.core.branding">
 
@@ -170,4 +170,11 @@ See here for more details on EPL: http://www.eclipse.org/org/documents/epl-v10.p
          version="0.0.0"
          unpack="false"/>
 
+   <plugin
+         id="org.moflon.core.ui.packageregistration"
+         download-size="0"
+         install-size="0"
+         version="0.0.0"
+         unpack="false"/>
+
 </feature>
diff --git a/org.moflon.core.releng.updatesite/category.xml b/org.moflon.core.releng.updatesite/category.xml
index 5f7a91ad..4442cd41 100644
--- a/org.moflon.core.releng.updatesite/category.xml
+++ b/org.moflon.core.releng.updatesite/category.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <site>
-   <feature url="features/org.moflon.core.feature_1.3.2.qualifier.jar" id="org.moflon.core.feature" version="1.3.2.qualifier">
+   <feature url="features/org.moflon.core.feature_1.3.3.qualifier.jar" id="org.moflon.core.feature" version="1.3.3.qualifier">
       <category name="org.moflon.core.category"/>
    </feature>
    <category-def name="org.moflon.core.category" label="eMoflon Core">
diff --git a/org.moflon.core.releng.updatesite/site.xml b/org.moflon.core.releng.updatesite/site.xml
index 42b1ee7b..1ab6b264 100644
--- a/org.moflon.core.releng.updatesite/site.xml
+++ b/org.moflon.core.releng.updatesite/site.xml
@@ -1,6 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <site>
-   <feature url="features/org.moflon.core.feature_1.3.2.qualifier.jar" id="org.moflon.core.feature" version="1.3.2.qualifier">
+   <description name="eMoflon::Core update site" url="https://emoflon.org/emoflon-core-updatesite/snapshot/updatesite/">
+For all available update channels of eMoflon::Core, see
+https://github.com/eMoflon/emoflon-core-updatesite/ .
+For further information on eMoflon::Core, see
+https://emoflon.org/ .
+   </description>
+   <feature url="features/org.moflon.core.feature_1.3.3.qualifier.jar" id="org.moflon.core.feature" version="1.3.3.qualifier">
       <category name="org.moflon.core.category"/>
    </feature>
    <category-def name="org.moflon.core.category" label="eMoflon Core">
diff --git a/org.moflon.core.ui.packageregistration/META-INF/MANIFEST.MF b/org.moflon.core.ui.packageregistration/META-INF/MANIFEST.MF
index 7a2016c1..d79081ef 100644
--- a/org.moflon.core.ui.packageregistration/META-INF/MANIFEST.MF
+++ b/org.moflon.core.ui.packageregistration/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: org.moflon.core.ui.packageregistration
 Bundle-SymbolicName: org.moflon.core.ui.packageregistration;singleton:=true
-Bundle-Version: 1.0.0.qualifier
+Bundle-Version: 1.0.1.qualifier
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Require-Bundle: org.eclipse.emf.ecore;bundle-version="2.11.0",
  org.eclipse.core.resources,
diff --git a/org.moflon.core.ui.packageregistration/build.properties b/org.moflon.core.ui.packageregistration/build.properties
index e9863e28..79785aca 100644
--- a/org.moflon.core.ui.packageregistration/build.properties
+++ b/org.moflon.core.ui.packageregistration/build.properties
@@ -2,4 +2,5 @@ source.. = src/
 output.. = bin/
 bin.includes = META-INF/,\
                .,\
+               icons/,\
                plugin.xml
diff --git a/org.moflon.core.ui.packageregistration/src/org/moflon/core/ui/packageregistration/RegisterMetamodelHandler.java b/org.moflon.core.ui.packageregistration/src/org/moflon/core/ui/packageregistration/RegisterMetamodelHandler.java
index 2e3d59fd..7fa7eb1c 100644
--- a/org.moflon.core.ui.packageregistration/src/org/moflon/core/ui/packageregistration/RegisterMetamodelHandler.java
+++ b/org.moflon.core.ui.packageregistration/src/org/moflon/core/ui/packageregistration/RegisterMetamodelHandler.java
@@ -23,11 +23,16 @@
 /**
  * This class provides the front-end capabilities for registering an EMF model.
  *
- * @author Roland Kluge - Initial implementation
- *
+ * @author Dimitrios Kolovos - initial API and implementation
+ * @author Roland Kluge - Adjustment to eMoflon::Core
  */
 public class RegisterMetamodelHandler extends AbstractCommandHandler {
 
+	/**
+	 * Invokes {@link #registerMetamodelInFile(IFile)} for each {@link IFile} in the selection
+	 * @param event the event to handle
+	 * @param {@link AbstractCommandHandler#DEFAULT_HANDLER_RESULT}
+	 */
 	@Override
 	public Object execute(final ExecutionEvent event) throws ExecutionException {
 		final ISelection selection = HandlerUtil.getCurrentSelectionChecked(event);
@@ -44,13 +49,17 @@ public Object execute(final ExecutionEvent event) throws ExecutionException {
 		return AbstractCommandHandler.DEFAULT_HANDLER_RESULT;
 	}
 
+	/**
+	 * Uses {@link EmfRegistryManager} to register the given {@link IFile}
+	 * @param file the file to register
+	 */
 	private void registerMetamodelInFile(final IFile file) {
 		final String fileName = file.getFullPath().toOSString();
 		try {
 			EmfRegistryManager.getInstance().registerMetamodel(fileName);
 			logger.info("Metamodel " + fileName + " registered successfully");
 		} catch (final Exception ex) {
-			logger.info("Metamodel " + fileName + " could not be registered", ex);
+			logger.error("Metamodel " + fileName + " could not be registered", ex);
 		}
 	}