diff --git a/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/SignalPainter.java b/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/SignalPainter.java
index 8bfd10a..449e884 100644
--- a/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/SignalPainter.java
+++ b/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/SignalPainter.java
@@ -101,20 +101,15 @@ public class SignalPainter extends TrackPainter {
         long endTime = beginTime + area.width*scaleFactor;
 		
 		EventEntry first = signal.getEvents().floorEntry(beginTime);
-		EventEntry last = signal.getEvents().floorEntry(endTime);
-		if (first == null) {
-			if (last == null)
-				return;
+		if (first == null)
 			first = signal.getEvents().firstEntry();
-		} else if (last == null) {
-			last = signal.getEvents().lastEntry();
-		}
+		beginTime = first.timestamp;
 		proj.setForeground(this.waveCanvas.styleProvider.getColor(WaveformColors.LINE));
 		proj.setLineStyle(SWT.LINE_SOLID);
 		proj.setLineWidth(1);
-		IEventList entries = signal.getEvents().subMap(first.timestamp, false, last.timestamp);
-		SignalChange left = new SignalChange(first);
-		SignalChange right = new SignalChange(entries.size() > 0 ? entries.firstEntry() : first);
+		IEventList entries = signal.getEvents().subMap(beginTime, true, endTime);
+		SignalChange left = new SignalChange(entries.firstEntry());
+		SignalChange right = new SignalChange(entries.size() > 1 ? entries.higherEntry(left.time) : entries.firstEntry());
 		maxPosX = area.x + area.width;
 		yOffsetT = this.waveCanvas.styleProvider.getTrackHeight() / 5 + area.y;
 		yOffsetM = this.waveCanvas.styleProvider.getTrackHeight() / 2 + area.y;
diff --git a/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/StreamPainter.java b/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/StreamPainter.java
index 39c96f2..3e3fb28 100644
--- a/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/StreamPainter.java
+++ b/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/StreamPainter.java
@@ -19,7 +19,9 @@ import org.eclipse.swt.graphics.Rectangle;
 
 import com.minres.scviewer.database.EventEntry;
 import com.minres.scviewer.database.EventKind;
+import com.minres.scviewer.database.EventList;
 import com.minres.scviewer.database.IEvent;
+import com.minres.scviewer.database.IEventList;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.tx.ITx;
 import com.minres.scviewer.database.tx.ITxEvent;
@@ -71,10 +73,11 @@ public class StreamPainter extends TrackPainter{
 		long beginTime = beginPos*scaleFactor;
 		long endTime = beginTime + area.width*scaleFactor;
 
-		EventEntry firstTx=stream.getEvents().floorEntry(beginTime);
-		EventEntry lastTx=stream.getEvents().ceilingEntry(endTime);
-		if(firstTx==null) firstTx = stream.getEvents().firstEntry();
-		if(lastTx==null) lastTx=stream.getEvents().lastEntry();
+		IEventList events = stream.getEvents();
+		EventEntry firstTx = events.floorEntry(beginTime);
+		EventEntry lastTx = events.ceilingEntry(endTime);
+		if(firstTx==null) firstTx = events.firstEntry();
+		if(lastTx==null) lastTx = events.lastEntry();
 		proj.setFillRule(SWT.FILL_EVEN_ODD);
 		proj.setLineStyle(SWT.LINE_SOLID);
 		proj.setLineWidth(1);
@@ -90,7 +93,7 @@ public class StreamPainter extends TrackPainter{
 			ITxEvent highlighed=null;
 			proj.setForeground(this.waveCanvas.styleProvider.getColor(WaveformColors.LINE));
 			long selectedId=waveCanvas.currentSelection!=null? waveCanvas.currentSelection.getId():-1;
-			for(EventEntry entry: stream.getEvents().subMap(firstTx.timestamp, true, lastTx.timestamp))
+			for(EventEntry entry: events.subMap(firstTx.timestamp, true, lastTx.timestamp))
 				for(IEvent e:entry.events){
 					ITxEvent evt = (ITxEvent) e;
 					ITx tx = evt.getTransaction();
diff --git a/plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java b/plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java
index 3a8c39f..03fbc96 100644
--- a/plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java
+++ b/plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java
@@ -113,7 +113,8 @@ public class VCDDbLoader implements IWaveformDbLoader, IVCDDatabaseBuilder {
 			moduleStack=null;
 			throw new InputFormatException(e.toString());
 		}
-		if(!res) throw new InputFormatException("Could not parse VCD file");
+		if(!res) 
+			throw new InputFormatException("Could not parse VCD file");
 		// calculate max time of this database
 		for(IWaveform waveform:signals) {
 			IEventList events =waveform.getEvents();