diff --git a/pom.xml b/pom.xml
index 385081b543ebbb6f5917da4657d55ef02da92d59..ec47bc35de5d5a267273002c94541d0e6c9874c5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,16 +1,16 @@
 <!--
   Copyright (C) 2017 Philipp Spohr
-  
+
   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software and associated documentation files (the "Software"), to deal
   in the Software without restriction, including without limitation the rights
   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   copies of the Software, and to permit persons to whom the Software is
   furnished to do so, subject to the following conditions:
-  
+
   The above copyright notice and this permission notice shall be included in
   all copies or substantial portions of the Software.
-  
+
   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -21,7 +21,7 @@
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
-	
+
 	<properties>
 		<bundle.symbolicName>de.hhu.ba.yoshikoWrapper</bundle.symbolicName>
 		<bundle.namespace>de.hhu.ba.yoshikoWrapper</bundle.namespace>
@@ -34,7 +34,7 @@
 	<groupId>de.hhu.ba</groupId>
 	<artifactId>yoshikoWrapper</artifactId>
 	<version>0.1.0</version>
-	
+
 	<name>YoshikoWrapper</name>
 
 	<build>
diff --git a/src/main/java/de/hhu/ba/yoshikoWrapper/CyActivator.java b/src/main/java/de/hhu/ba/yoshikoWrapper/CyActivator.java
index d8ebf32dd583b7e7264487b6cf74104d14f73c55..080eb6a453f4ad873556e1fe8ad92b1e50e07d0a 100644
--- a/src/main/java/de/hhu/ba/yoshikoWrapper/CyActivator.java
+++ b/src/main/java/de/hhu/ba/yoshikoWrapper/CyActivator.java
@@ -24,19 +24,13 @@ package de.hhu.ba.yoshikoWrapper;
 import java.util.Properties;
 
 import org.cytoscape.application.CyApplicationManager;
-import org.cytoscape.application.events.SetCurrentNetworkListener;
 import org.cytoscape.application.swing.CySwingApplication;
 import org.cytoscape.application.swing.CytoPanelComponent;
 import org.cytoscape.model.CyNetworkFactory;
 import org.cytoscape.model.CyNetworkManager;
-import org.cytoscape.model.events.AddedEdgesListener;
-import org.cytoscape.model.events.ColumnCreatedListener;
-import org.cytoscape.model.events.ColumnDeletedListener;
-import org.cytoscape.model.events.RemovedEdgesListener;
 import org.cytoscape.model.subnetwork.CyRootNetworkManager;
 import org.cytoscape.service.util.AbstractCyActivator;
 import org.cytoscape.service.util.CyServiceRegistrar;
-import org.cytoscape.session.events.SessionLoadedListener;
 import org.cytoscape.task.create.CloneNetworkTaskFactory;
 import org.cytoscape.view.model.CyNetworkViewFactory;
 import org.cytoscape.view.layout.CyLayoutAlgorithmManager;
@@ -53,7 +47,6 @@ import de.hhu.ba.yoshikoWrapper.core.CyCore;
 import de.hhu.ba.yoshikoWrapper.core.LocalizationManager;
 import de.hhu.ba.yoshikoWrapper.core.YoshUtil;
 import de.hhu.ba.yoshikoWrapper.core.YoshikoLoader;
-import de.hhu.ba.yoshikoWrapper.cytoUtil.NetChangeListener;
 import de.hhu.ba.yoshikoWrapper.swing.components.MainPanel;
 
 /**
@@ -113,15 +106,6 @@ public class CyActivator extends AbstractCyActivator {
 		MainPanel mainPanel = new MainPanel();
 		registerService(context,mainPanel,CytoPanelComponent.class, new Properties());
 
-		//Listener for Network-Changes -> Updating possible columns for mapping
-		NetChangeListener netChangeListener = new NetChangeListener(mainPanel.getColumnMapper());
-		registerService(context,netChangeListener, AddedEdgesListener.class, new Properties());
-		registerService(context,netChangeListener, RemovedEdgesListener.class, new Properties());
-		registerService(context,netChangeListener, ColumnCreatedListener.class, new Properties());
-		registerService(context,netChangeListener, ColumnDeletedListener.class, new Properties());
-		registerService(context,netChangeListener, SessionLoadedListener.class, new Properties());
-		registerService(context,netChangeListener, SetCurrentNetworkListener.class, new Properties());
-
 
 	}
 
diff --git a/src/main/java/de/hhu/ba/yoshikoWrapper/core/YoshikoLoader.java b/src/main/java/de/hhu/ba/yoshikoWrapper/core/YoshikoLoader.java
index 9b66bdb5912175cd99fe5c4fc5b9d215de3eb962..bb7a8be983ba50477c289a2a2bb98afa0fce0d7f 100644
--- a/src/main/java/de/hhu/ba/yoshikoWrapper/core/YoshikoLoader.java
+++ b/src/main/java/de/hhu/ba/yoshikoWrapper/core/YoshikoLoader.java
@@ -49,15 +49,17 @@ public class YoshikoLoader {
 		}
 
 		try {
-			System.out.println("Attempting to load library @: "+libPath);
+			logger.info("Attempting to load library @: "+libPath);
 			if (!libPath.substring(0,libPath.lastIndexOf(".")).endsWith(REQUIRED_VERSION)) {
 				throw new Exception(LocalizationManager.get("libFail")+" "+REQUIRED_VERSION);
+				//TODO: Error output!
 			}
 			System.load(libPath);
 			//update cfg
 			CyCore.cm.getProperties().setProperty("pathToYoshiko", libPath);
 		}
 		catch(Exception e) {
+			logger.error(e.getMessage());
 			JOptionPane.showMessageDialog(null, LocalizationManager.get("libFail")+" "+REQUIRED_VERSION);
 			return;
 		}
diff --git a/src/main/java/de/hhu/ba/yoshikoWrapper/cytoUtil/NetChangeListener.java b/src/main/java/de/hhu/ba/yoshikoWrapper/cytoUtil/NetChangeListener.java
deleted file mode 100644
index c5f9237c571d965484d6d991891685954964b867..0000000000000000000000000000000000000000
--- a/src/main/java/de/hhu/ba/yoshikoWrapper/cytoUtil/NetChangeListener.java
+++ /dev/null
@@ -1,111 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2017 Philipp Spohr
- * 
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- * 
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- ******************************************************************************/
-package de.hhu.ba.yoshikoWrapper.cytoUtil;
-
-import org.cytoscape.application.events.SetCurrentNetworkEvent;
-import org.cytoscape.application.events.SetCurrentNetworkListener;
-import org.cytoscape.model.events.AddedEdgesEvent;
-import org.cytoscape.model.events.AddedEdgesListener;
-import org.cytoscape.model.events.ColumnCreatedEvent;
-import org.cytoscape.model.events.ColumnCreatedListener;
-import org.cytoscape.model.events.ColumnDeletedEvent;
-import org.cytoscape.model.events.ColumnDeletedListener;
-import org.cytoscape.model.events.RemovedEdgesEvent;
-import org.cytoscape.model.events.RemovedEdgesListener;
-import org.cytoscape.session.events.SessionLoadedEvent;
-import org.cytoscape.session.events.SessionLoadedListener;
-
-import de.hhu.ba.yoshikoWrapper.core.CyCore;
-import de.hhu.ba.yoshikoWrapper.swing.components.ColumnMapper;
-
-public class NetChangeListener 
-implements //everything
-AddedEdgesListener,
-RemovedEdgesListener,
-ColumnCreatedListener,
-ColumnDeletedListener,
-SessionLoadedListener,
-SetCurrentNetworkListener
-{
-	private ColumnMapper columnMapper;
-	
-	public NetChangeListener(ColumnMapper columnMapper) {
-		this.columnMapper = columnMapper;
-	}
-
-	@Override
-	public void handleEvent(ColumnDeletedEvent e) {
-		if (
-				e.getSource() == CyCore.cy.getCurrentNetwork().getDefaultEdgeTable() ||
-				e.getSource() == CyCore.cy.getCurrentNetwork().getDefaultNetworkTable() ||
-				e.getSource() == CyCore.cy.getCurrentNetwork().getDefaultNodeTable()
-				
-			)
-		{
-			columnMapper.updateValues();
-		}
-	}
-
-	@Override
-	public void handleEvent(ColumnCreatedEvent e) {
-		if (
-				e.getSource() == CyCore.cy.getCurrentNetwork().getDefaultEdgeTable() ||
-				e.getSource() == CyCore.cy.getCurrentNetwork().getDefaultNetworkTable() ||
-				e.getSource() == CyCore.cy.getCurrentNetwork().getDefaultNodeTable()
-				
-			)
-		{
-			columnMapper.updateValues();
-		}
-	}
-
-	@Override
-	public void handleEvent(RemovedEdgesEvent e) {
-		if (
-				e.getSource() == CyCore.cy.getCurrentNetwork()
-			)
-		{
-			columnMapper.updateValues();
-		}
-	}
-
-	@Override
-	public void handleEvent(AddedEdgesEvent e) {
-		if (
-				e.getSource() == CyCore.cy.getCurrentNetwork()
-			)
-		{
-			columnMapper.updateValues();
-		}
-	}
-
-	@Override
-	public void handleEvent(SessionLoadedEvent e) {
-		columnMapper.updateValues();
-	}
-
-	@Override
-	public void handleEvent(SetCurrentNetworkEvent e) {
-		columnMapper.updateValues();
-	}
-
-}
diff --git a/src/main/java/de/hhu/ba/yoshikoWrapper/swing/components/ColumnMapper.java b/src/main/java/de/hhu/ba/yoshikoWrapper/swing/components/ColumnMapper.java
index 6878cdff42fa3c0c7036e72e7000eec3b701a1d5..859de27bf79a3fa30253e804ec57cf5999439131 100644
--- a/src/main/java/de/hhu/ba/yoshikoWrapper/swing/components/ColumnMapper.java
+++ b/src/main/java/de/hhu/ba/yoshikoWrapper/swing/components/ColumnMapper.java
@@ -1,16 +1,16 @@
 /*******************************************************************************
  * Copyright (C) 2017 Philipp Spohr
- * 
+ *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
- * 
+ *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -21,40 +21,63 @@
  ******************************************************************************/
 package de.hhu.ba.yoshikoWrapper.swing.components;
 
+import java.util.Properties;
+
 import javax.swing.GroupLayout;
 import javax.swing.JCheckBox;
 import javax.swing.JComboBox;
 import javax.swing.JPanel;
 import javax.swing.GroupLayout.Alignment;
 
+import org.cytoscape.application.events.SetCurrentNetworkEvent;
+import org.cytoscape.application.events.SetCurrentNetworkListener;
 import org.cytoscape.model.CyColumn;
 import org.cytoscape.model.CyNetwork;
+import org.cytoscape.model.events.ColumnCreatedEvent;
+import org.cytoscape.model.events.ColumnCreatedListener;
+import org.cytoscape.model.events.ColumnDeletedEvent;
+import org.cytoscape.model.events.ColumnDeletedListener;
+import org.cytoscape.session.events.SessionLoadedEvent;
+import org.cytoscape.session.events.SessionLoadedListener;
 
 import de.hhu.ba.yoshikoWrapper.core.CyCore;
 import de.hhu.ba.yoshikoWrapper.swing.EnableWhenSelectedListener;
 import de.hhu.ba.yoshikoWrapper.swing.SwingUtil;
 
 @SuppressWarnings("serial") //will never be serialized
-public class ColumnMapper extends JPanel{
-	
+public class ColumnMapper extends JPanel
+implements //everything
+ColumnCreatedListener,
+ColumnDeletedListener,
+SessionLoadedListener,
+SetCurrentNetworkListener
+
+{
 
 	//Swing components
 	private final JComboBox<CyColumn> editingCostMapper;
 	private final JComboBox<CyColumn> permanentMapper;
 	private final JComboBox<CyColumn> forbiddenMapper;
-		
+
 	private final JCheckBox useMappingCost;
 	private final JCheckBox useMappingPerm;
 	private final JCheckBox useMappingForb;
-		
+
 	public ColumnMapper() {
+
+		//Listener for Network-Changes -> Updating possible columns for mapping
+		CyCore.registrar.registerService(this,ColumnCreatedListener.class,new Properties());
+		CyCore.registrar.registerService(this,ColumnDeletedListener.class,new Properties());
+		CyCore.registrar.registerService(this,SessionLoadedListener.class,new Properties());
+		CyCore.registrar.registerService(this,SetCurrentNetworkListener.class,new Properties());
+
 		//SWING COMPONENTS
-		
+
 		//Combo-Boxes that map to the CyColumns
 		editingCostMapper = new JComboBox<CyColumn>();
 		permanentMapper = new JComboBox<CyColumn>();
 		forbiddenMapper = new JComboBox<CyColumn>();
-		
+
 		//Should only be enabled if the option is checked
 		editingCostMapper.setEnabled(false);
 		permanentMapper.setEnabled(false);
@@ -63,7 +86,7 @@ public class ColumnMapper extends JPanel{
 		useMappingCost = new JCheckBox("Map modification costs");
 		useMappingPerm = new JCheckBox("Map edges as permanent");
 		useMappingForb = new JCheckBox("Map edges as forbidden");
-		
+
 		useMappingCost.addActionListener(
 			new EnableWhenSelectedListener(useMappingCost, editingCostMapper)
 		);
@@ -73,15 +96,15 @@ public class ColumnMapper extends JPanel{
 		useMappingForb.addActionListener(
 			new EnableWhenSelectedListener(useMappingForb, forbiddenMapper)
 		);
-		
+
 
 		SwingUtil.addAll(this,useMappingCost,editingCostMapper);
 		SwingUtil.addAll(this,useMappingPerm,permanentMapper);
 		SwingUtil.addAll(this,useMappingForb,forbiddenMapper);
-		
+
 		//Layout
 		GroupLayout layout = new GroupLayout(this);
-		
+
 		layout.setHorizontalGroup(layout.createSequentialGroup()
 			.addGroup(layout.createParallelGroup(Alignment.LEADING)
 					.addComponent(useMappingCost)
@@ -95,8 +118,8 @@ public class ColumnMapper extends JPanel{
 			)
 
 		);
-		
-		layout.setVerticalGroup(layout.createSequentialGroup()		
+
+		layout.setVerticalGroup(layout.createSequentialGroup()
 				.addGroup(layout.createParallelGroup()
 						.addComponent(useMappingCost)
 						.addComponent(editingCostMapper)
@@ -110,20 +133,20 @@ public class ColumnMapper extends JPanel{
 						.addComponent(forbiddenMapper)
 				)
 		);
-		
+
 		this.setLayout(layout);
-		
+
 		//Initial call to get table values
 		updateValues();
 
 	}
-	
-	public void updateValues() {
-		
+
+	private void updateValues() {
+
 		CyNetwork net = CyCore.cy.getCurrentNetwork();
 
 		if (net != null) { //Check if a network is loaded
-	
+
 			//Clear entries
 			editingCostMapper.removeAllItems();
 			for (CyColumn c : net.getDefaultEdgeTable().getColumns()){
@@ -138,7 +161,7 @@ public class ColumnMapper extends JPanel{
 				useMappingCost.setSelected(false);
 				editingCostMapper.setEnabled(false);
 			}
-			
+
 			forbiddenMapper.removeAllItems();
 			for (CyColumn c : net.getDefaultEdgeTable().getColumns()){
 				//Only add columns with boolean values
@@ -152,7 +175,7 @@ public class ColumnMapper extends JPanel{
 				useMappingForb.setSelected(false);
 				forbiddenMapper.setEnabled(false);
 			}
-			
+
 			permanentMapper.removeAllItems();
 			for (CyColumn c : net.getDefaultEdgeTable().getColumns()){
 				//Only add columns with boolean values
@@ -166,24 +189,59 @@ public class ColumnMapper extends JPanel{
 				useMappingPerm.setSelected(false);
 				permanentMapper.setEnabled(false);
 			}
-		
+
 		}
 	}
-	
+
+
+	//LISTENER__IMPL//
+
+	@Override
+	public void handleEvent(SetCurrentNetworkEvent e) {
+			updateValues();
+	}
+
+	@Override
+	public void handleEvent(SessionLoadedEvent e) {
+		updateValues();
+	}
+
+	@Override
+	public void handleEvent(ColumnDeletedEvent e) {
+		if (
+				e.getSource() == CyCore.cy.getCurrentNetwork().getDefaultEdgeTable() ||
+				e.getSource() == CyCore.cy.getCurrentNetwork().getDefaultNetworkTable()
+			)
+		{
+			updateValues();
+		}
+	}
+
+	@Override
+	public void handleEvent(ColumnCreatedEvent e) {
+		if (
+				e.getSource() == CyCore.cy.getCurrentNetwork().getDefaultEdgeTable() ||
+				e.getSource() == CyCore.cy.getCurrentNetwork().getDefaultNetworkTable()
+			)
+		{
+			updateValues();
+		}
+	}
+
 	public CyColumn getEditingCostColumn() {
 		if (useMappingCost.isSelected()) {
 			return editingCostMapper.getItemAt(editingCostMapper.getSelectedIndex());
 		}
 		return null;
 	}
-	
+
 	public CyColumn getForbiddenColumn() {
 		if (useMappingForb.isSelected()) {
 			return forbiddenMapper.getItemAt(forbiddenMapper.getSelectedIndex());
 		}
 		return null;
 	}
-	
+
 	public CyColumn getPermanentColumn() {
 		if (useMappingPerm.isSelected()) {
 			return permanentMapper.getItemAt(permanentMapper.getSelectedIndex());
@@ -191,4 +249,6 @@ public class ColumnMapper extends JPanel{
 		return null;
 	}
 
+
+
 }