diff --git a/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/TextDbLoader.groovy b/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/TextDbLoader.groovy
index a5adb3b..3979c91 100644
--- a/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/TextDbLoader.groovy
+++ b/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/TextDbLoader.groovy
@@ -28,7 +28,6 @@ import com.minres.scviewer.database.IWaveform
 import com.minres.scviewer.database.IWaveformDb
 import com.minres.scviewer.database.IWaveformDbLoader
 import com.minres.scviewer.database.RelationType
-import com.minres.scviewer.database.DataType
 
 public class TextDbLoader implements IWaveformDbLoader{
 
diff --git a/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/RulerPainter.java b/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/RulerPainter.java
index 96cee3b..92dfff2 100644
--- a/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/RulerPainter.java
+++ b/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/RulerPainter.java
@@ -46,7 +46,6 @@ public class RulerPainter implements IPainter {
         long startPos=area.x*scaleFactor; 
         long startVal=startPos + waveCanvas.getXOffset()*scaleFactor;
         long endPos=startPos+area.width*scaleFactor;
-        long endVal=startVal+area.width*scaleFactor;
 
         long rulerTickMinor = rulerTickMinorC*scaleFactor;
         long rulerTickMajor = rulerTickMajorC*scaleFactor;
@@ -68,12 +67,9 @@ public class RulerPainter implements IPainter {
         gc.setForeground(headerFgColor);
         gc.drawLine(area.x, area.y+bottom, area.x+area.width, area.y+bottom);
         
-        int x0_max = 0;
-        
         for (long pos = startMinorIncrPos, tick = startMinorIncrVal; pos < endPos; pos+= rulerTickMinor, tick += rulerTickMinor) {
             int x0_pos = (int) (pos/scaleFactor);
             long x0_val = tick/scaleFactor;
-            x0_max = x0_pos;
             if ((tick % rulerTickMajor) == 0) {
                 gc.drawText(df.format(x0_val*unitMultiplier)+unit, x0_pos, area.y+textY);
                 gc.drawLine(x0_pos, area.y+majorTickY, x0_pos,area.y+ bottom);
diff --git a/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/SignalPainter.java b/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/SignalPainter.java
index a011541..eb8221b 100644
--- a/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/SignalPainter.java
+++ b/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/SignalPainter.java
@@ -78,11 +78,6 @@ public class SignalPainter extends TrackPainter {
 		this.waveCanvas = txDisplay;
 	}
 
-	private int getXValEnd(long time) {
-		long ltmp = time / this.waveCanvas.getScaleFactor();
-		return ltmp > maxValX ? maxValX : (int) ltmp;
-	}
-
 	private int getXPosEnd(long time) {
 		long ltmp = time / this.waveCanvas.getScaleFactor() - waveCanvas.getXOffset();
 		return ltmp > maxPosX ? maxPosX : (int) ltmp;
@@ -100,7 +95,6 @@ public class SignalPainter extends TrackPainter {
 		long scaleFactor = this.waveCanvas.getScaleFactor();
 		long beginPos = area.x;
 		long beginTime = (beginPos + waveCanvas.getXOffset())*scaleFactor;
-		long endPos = beginPos + area.width;
         long endTime = beginTime + area.width*scaleFactor;
 		
 		Entry<Long, ?> first = signal.getEvents().floorEntry(beginTime);
@@ -125,7 +119,6 @@ public class SignalPainter extends TrackPainter {
 		yOffsetB = 4 * this.waveCanvas.getTrackHeight() / 5 + area.y;
 		int xSigChangeBeginVal = Math.max(area.x + (int)waveCanvas.getXOffset(), (int) (left.time / this.waveCanvas.getScaleFactor()));
 		int xSigChangeBeginPos = area.x;
-		int xSigChangeEndVal = Math.max(area.x + (int)waveCanvas.getXOffset(), getXValEnd(right.time));
 		int xSigChangeEndPos = Math.max(area.x, getXPosEnd(right.time));
 		
 		boolean multiple = false;
diff --git a/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/WaveformCanvas.java b/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/WaveformCanvas.java
index 35ccff3..06687bc 100644
--- a/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/WaveformCanvas.java
+++ b/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/WaveformCanvas.java
@@ -235,6 +235,7 @@ public class WaveformCanvas extends Canvas{
 
     public void setZoomLevel(int level, long centerTime) {
     	long oldScaleFactor=scaleFactor;
+    	if(level<0) level = 0;
     	if(level<Constants.unitMultiplier.length*Constants.unitString.length){
     		this.level = level;
     		this.scaleFactor = (long) Math.pow(10, level/2);
diff --git a/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/WaveformViewer.java b/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/WaveformViewer.java
index 9b959d4..7f0654f 100644
--- a/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/WaveformViewer.java
+++ b/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/WaveformViewer.java
@@ -40,7 +40,6 @@ import org.eclipse.swt.dnd.DND;
 import org.eclipse.swt.dnd.DragSource;
 import org.eclipse.swt.dnd.DragSourceAdapter;
 import org.eclipse.swt.dnd.DragSourceEvent;
-import org.eclipse.swt.dnd.DragSourceListener;
 import org.eclipse.swt.dnd.DropTarget;
 import org.eclipse.swt.dnd.DropTargetAdapter;
 import org.eclipse.swt.dnd.DropTargetEvent;
@@ -181,9 +180,11 @@ public class WaveformViewer implements IWaveformViewer  {
 	            GC gc = e.gc;
 	            gc.setAlpha(128);
 	            int minX = Math.min(start.x, end.x);
-	            int maxX = Math.max(start.x, end.x);
-	            int width = maxX - minX;
-	            gc.fillRectangle(minX, 0, width, e.height);
+	            int width = Math.max(start.x, end.x) - minX;
+	            Point origin = waveformCanvas.getOrigin();
+	            int y_top = waveformCanvas.getRulerHeight()- origin.y;
+	            int y_bottom = waveformCanvas.getSize().y;
+	            gc.fillRectangle(minX, y_top, width,y_bottom);
 			}
 		}
 
diff --git a/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java b/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java
index d0a93bd..bde1c9b 100644
--- a/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java
+++ b/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java
@@ -12,7 +12,6 @@ package com.minres.scviewer.database.vcd;
 
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.Collection;
diff --git a/com.minres.scviewer.database/META-INF/MANIFEST.MF b/com.minres.scviewer.database/META-INF/MANIFEST.MF
index 9550f8c..09d9fe4 100644
--- a/com.minres.scviewer.database/META-INF/MANIFEST.MF
+++ b/com.minres.scviewer.database/META-INF/MANIFEST.MF
@@ -5,7 +5,8 @@ Bundle-SymbolicName: com.minres.scviewer.database
 Bundle-Version: 1.0.0.qualifier
 Bundle-Vendor: MINRES Technologies GmbH
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
-Export-Package: com.minres.scviewer.database
+Export-Package: com.minres.scviewer.database,
+ com.minres.scviewer.database.internal;x-internal:=true
 Bundle-ActivationPolicy: lazy
 Service-Component: OSGI-INF/component.xml,OSGI-INF/component2.xml
 Automatic-Module-Name: com.minres.scviewer.database
diff --git a/com.minres.scviewer.e4.application/build.properties b/com.minres.scviewer.e4.application/build.properties
index 659bac7..ae6a82b 100644
--- a/com.minres.scviewer.e4.application/build.properties
+++ b/com.minres.scviewer.e4.application/build.properties
@@ -1,4 +1,3 @@
-output.. = bin/
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
diff --git a/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/AboutDialog.java b/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/AboutDialog.java
index 6180e95..7ed8815 100644
--- a/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/AboutDialog.java
+++ b/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/AboutDialog.java
@@ -139,6 +139,7 @@ public class AboutDialog extends Dialog {
 				// links are activated on mouse down when the control key is held down 
 //				if ((event.stateMask & SWT.MOD1) != 0) {
 					try {
+						@SuppressWarnings("deprecation")
 						int offset = ((StyledText)event.widget).getOffsetAtLocation(new Point (event.x, event.y));
 						StyleRange style = ((StyledText)event.widget).getStyleRangeAtOffset(offset);
 						if (style != null && style.underline && style.underlineStyle == SWT.UNDERLINE_LINK) {
diff --git a/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/LoadingWaveformDb.java b/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/LoadingWaveformDb.java
index 696d955..56c69f6 100644
--- a/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/LoadingWaveformDb.java
+++ b/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/LoadingWaveformDb.java
@@ -8,7 +8,6 @@ import java.util.List;
 import com.minres.scviewer.database.IHierNode;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.IWaveformDb;
-import com.minres.scviewer.database.IWaveformEvent;
 import com.minres.scviewer.database.RelationType;
 import com.minres.scviewer.e4.application.Messages;
 
diff --git a/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/WaveformViewer.java b/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/WaveformViewer.java
index ad8df33..6441654 100644
--- a/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/WaveformViewer.java
+++ b/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/WaveformViewer.java
@@ -277,43 +277,10 @@ public class WaveformViewer implements IFileChangeListener, IPreferenceChangeLis
 				}
 			}
 		});
-		/*
-		waveformPane.getWaveformControl().addMouseTrackListener(new MouseTrackListener() {
-			@Override
-			public void mouseHover(MouseEvent e) {
-				// TODO Auto-generated method stub
-			}
-			@Override
-			public void mouseExit(MouseEvent e) {
-				// TODO Auto-generated method stub
-			}
-			@Override
-			public void mouseEnter(MouseEvent e) {
-				// TODO Auto-generated method stub
-			}
-		});
-		
-		waveformPane.getWaveformControl().addMouseWheelListener(new MouseWheelListener() {
-			@Override
-			public void mouseScrolled(MouseEvent e) {
-				// TODO Auto-generated method stub
-			}
-		});
-		*/
+
 		waveformPane.getWaveformControl().addListener(SWT.KeyDown, new Listener() {
-			@SuppressWarnings("null")
 			@Override
 			public void handleEvent(Event e) {
-				/*
-					String string = e.type == SWT.KeyDown ? "DOWN:" : "UP  :";
-					string += " stateMask=0x" + Integer.toHexString (e.stateMask) + ","; // SWT.CTRL, SWT.ALT, SWT.SHIFT, SWT.COMMAND
-					string += " keyCode=0x" + Integer.toHexString (e.keyCode) + ",";
-					string += " character=0x" + Integer.toHexString (e.character) ;
-					if (e.keyLocation != 0) {
-						string +=  " location="+e.keyLocation;
-					}
-					System.out.println (string);
-				*/
 				if((e.stateMask&SWT.MOD3)!=0) { // Alt key
 				} else if((e.stateMask&SWT.MOD1)!=0) { //Ctrl/Cmd
 					int zoomlevel = waveformPane.getZoomLevel();