diff --git a/src/org/dclermonte/siba/gui/CheckDirectorySelector.java b/src/org/dclermonte/siba/gui/CheckDirectorySelector.java
index 52664b9..8a4245f 100644
--- a/src/org/dclermonte/siba/gui/CheckDirectorySelector.java
+++ b/src/org/dclermonte/siba/gui/CheckDirectorySelector.java
@@ -9,6 +9,8 @@ import javax.swing.JFileChooser;
 import javax.swing.filechooser.FileNameExtensionFilter;
 
 import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  *
@@ -19,6 +21,7 @@ public class CheckDirectorySelector extends JFileChooser
 {
 	private static final long serialVersionUID = 3782597353602048214L;
 	private static final ResourceBundle BUNDLE = ResourceBundle.getBundle("org.dclermonte.siba.gui.messages"); //$NON-NLS-1$
+	public static final Logger logger = LoggerFactory.getLogger(CheckDirectorySelector.class);
 
 	/**
 	 *
@@ -84,9 +87,8 @@ public class CheckDirectorySelector extends JFileChooser
 	{
 		//
 		super.setSelectedFile(file);
-
-		System.out.println("==== SET SELECTED FILE=================");
-		System.out.println("SELECED FILE " + file);
+		logger.debug("==== SET SELECTED FILE=================");
+		logger.debug("SELECED FILE " + file);
 	}
 
 	/**
diff --git a/src/org/dclermonte/siba/gui/SibaGUI.java b/src/org/dclermonte/siba/gui/SibaGUI.java
index 51131d3..a7649ab 100644
--- a/src/org/dclermonte/siba/gui/SibaGUI.java
+++ b/src/org/dclermonte/siba/gui/SibaGUI.java
@@ -96,7 +96,7 @@ public class SibaGUI
 				}
 				else if (exception instanceof SibaException)
 				{
-					message = "SibaException" + exception.getMessage();
+					message = exception.getMessage();
 				}
 				else
 				{
@@ -114,9 +114,13 @@ public class SibaGUI
 
 		// Set LookAndFeel.
 		System.out.println("System lookAndFeel property:" + System.getProperty("swing.defaultlaf"));
-		System.out.println("Available lookAndFeel: " + GUIToolBox.availableLookAndFeels().toString());
+		logger.debug("Available lookAndFeel: " + GUIToolBox.availableLookAndFeels().toString());
+		// System.out.println("Available lookAndFeel: " +
+		// GUIToolBox.availableLookAndFeels().toString());
 		System.out.println("System lookAndFeel: " + UIManager.getSystemLookAndFeelClassName());
-		System.out.println("Current lookAndFeel: " + UIManager.getLookAndFeel().getName());
+		logger.debug("Current lookAndFeel: " + UIManager.getLookAndFeel().getName());
+		// System.out.println("Current lookAndFeel: " +
+		// UIManager.getLookAndFeel().getName());
 
 		if (!StringUtils.equals(UIManager.getSystemLookAndFeelClassName(), "javax.swing.plaf.metal.MetalLookAndFeel"))
 		{
@@ -143,12 +147,15 @@ public class SibaGUI
 			}
 		}
 		/*	UIManager.setLookAndFeel("com.sun.java.swing.plaf.metal.MetalLookAndFeel"); */
-		System.out.println("Activated lookAndFeel: " + UIManager.getLookAndFeel().getName());
+		logger.debug("Activated lookAndFeel: " + UIManager.getLookAndFeel().getName());
+		// System.out.println("Activated lookAndFeel: " +
+		// UIManager.getLookAndFeel().getName());
 
 		// Set default locale.
 		this.locale = Locale.getDefault();
 		updateLanguage(this.locale);
-		System.out.println(this.locale.getDisplayLanguage());
+		logger.debug(this.locale.getDisplayLanguage());
+		// System.out.println(this.locale.getDisplayLanguage());
 		initialize();
 
 	}
diff --git a/src/org/dclermonte/siba/gui/SourceDirectorySelector.java b/src/org/dclermonte/siba/gui/SourceDirectorySelector.java
index c51092c..0af2b00 100644
--- a/src/org/dclermonte/siba/gui/SourceDirectorySelector.java
+++ b/src/org/dclermonte/siba/gui/SourceDirectorySelector.java
@@ -8,6 +8,8 @@ import java.util.ResourceBundle;
 import javax.swing.JFileChooser;
 
 import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  *
@@ -17,6 +19,7 @@ public class SourceDirectorySelector extends JFileChooser
 {
 	private static final long serialVersionUID = 3782597353602048214L;
 	private static final ResourceBundle BUNDLE = ResourceBundle.getBundle("org.dclermonte.siba.gui.messages"); //$NON-NLS-1$
+	public static final Logger logger = LoggerFactory.getLogger(SourceDirectorySelector.class);
 
 	/**
 	 *
@@ -80,9 +83,8 @@ public class SourceDirectorySelector extends JFileChooser
 	{
 		//
 		super.setSelectedFile(file);
-
-		System.out.println("==== SET SELECTED FILE=================");
-		System.out.println("SELECED FILE " + file);
+		logger.debug("==== SET SELECTED FILE=================");
+		logger.debug("SELECED FILE " + file);
 	}
 
 	/**
diff --git a/src/org/dclermonte/siba/gui/TargetDirectorySelector.java b/src/org/dclermonte/siba/gui/TargetDirectorySelector.java
index 73b7165..7ffb180 100644
--- a/src/org/dclermonte/siba/gui/TargetDirectorySelector.java
+++ b/src/org/dclermonte/siba/gui/TargetDirectorySelector.java
@@ -8,6 +8,8 @@ import java.util.ResourceBundle;
 import javax.swing.JFileChooser;
 
 import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  *
@@ -17,6 +19,7 @@ public class TargetDirectorySelector extends JFileChooser
 {
 	private static final long serialVersionUID = 3782597353602048214L;
 	private static final ResourceBundle BUNDLE = ResourceBundle.getBundle("org.dclermonte.siba.gui.messages"); //$NON-NLS-1$
+	public static final Logger logger = LoggerFactory.getLogger(TargetDirectorySelector.class);
 
 	/**
 	 *
@@ -82,8 +85,8 @@ public class TargetDirectorySelector extends JFileChooser
 		//
 		super.setSelectedFile(file);
 
-		System.out.println("==== SET SELECTED FILE=================");
-		System.out.println("SELECED FILE " + file);
+		logger.debug("==== SET SELECTED FILE=================");
+		logger.debug("SELECED FILE " + file);
 	}
 
 	/**