diff --git a/memory/org.eclipse.cdt.debug.ui.memory.memorybrowser/src/org/eclipse/cdt/debug/ui/memory/memorybrowser/MemoryBrowser.java b/memory/org.eclipse.cdt.debug.ui.memory.memorybrowser/src/org/eclipse/cdt/debug/ui/memory/memorybrowser/MemoryBrowser.java
index b26235a224a..21c1584aae9 100644
--- a/memory/org.eclipse.cdt.debug.ui.memory.memorybrowser/src/org/eclipse/cdt/debug/ui/memory/memorybrowser/MemoryBrowser.java
+++ b/memory/org.eclipse.cdt.debug.ui.memory.memorybrowser/src/org/eclipse/cdt/debug/ui/memory/memorybrowser/MemoryBrowser.java
@@ -995,7 +995,9 @@ public class MemoryBrowser extends ViewPart implements IDebugContextListener, IM
 				if(tabFolder != null) {
 					fStackLayout.topControl = tabFolder;
 					CTabItem tabItem = (CTabItem) tabFolder.getSelection();
-					getSite().getSelectionProvider().setSelection(new StructuredSelection(tabItem.getData(KEY_RENDERING)));
+					if ( tabItem != null ) {
+						getSite().getSelectionProvider().setSelection(new StructuredSelection(tabItem.getData(KEY_RENDERING)));
+					}
 					handleTabActivated(tabItem);
 				}
 				else {
diff --git a/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/PlainTextExporter.java b/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/PlainTextExporter.java
index 35766ded478..ffeb18f5788 100644
--- a/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/PlainTextExporter.java
+++ b/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/PlainTextExporter.java
@@ -159,11 +159,41 @@ public class PlainTextExporter implements IMemoryExporter {
 
 		textValue = fProperties.get(TRANSFER_START);
 		fStartText.setText(textValue != null ? textValue : "0x0"); //$NON-NLS-1$
+		
+		try
+		{
+			getStartAddress();
+		}
+		catch(Exception e)
+		{
+			fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+		}
 
 		textValue = fProperties.get(TRANSFER_END);
 		fEndText.setText(textValue != null ? textValue : "0x0"); //$NON-NLS-1$
-
-		fLengthText.setText(getEndAddress().subtract(getStartAddress()).toString());
+		
+		try
+		{
+			getEndAddress();
+		}
+		catch(Exception e)
+		{
+			fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+		}
+		
+		try
+		{
+			BigInteger length = getEndAddress().subtract(getStartAddress());
+			fLengthText.setText(length.toString());
+			if(length.compareTo(BigInteger.ZERO) <= 0) {
+				fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+			}
+		}
+		catch(Exception e)
+		{
+			fLengthText.setText("0");
+			fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+		}
 		
 		fileButton.addSelectionListener(new SelectionAdapter() {
 
@@ -195,13 +225,25 @@ public class PlainTextExporter implements IMemoryExporter {
 					fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					
-					BigInteger actualLength = getEndAddress().subtract(getStartAddress());
+					BigInteger startAddress = getStartAddress();
+					BigInteger actualLength = getEndAddress().subtract(startAddress);
 					fLengthText.setText(actualLength.toString());
 					
 					if(actualLength.compareTo(BigInteger.ZERO) <= 0) {
 						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 					}
+					
+					if(startAddress.compareTo(BigInteger.ZERO) < 0) {
+						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
+					
+					BigInteger endAddress = getEndAddress();
+					if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
 				}
 				catch(Exception ex)
 				{
@@ -230,6 +272,18 @@ public class PlainTextExporter implements IMemoryExporter {
 						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 					}
+					
+					BigInteger startAddress = getStartAddress();
+					if(startAddress.compareTo(BigInteger.ZERO) < 0) {
+						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
+					
+					BigInteger endAddress = getEndAddress();
+					if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
 				}
 				catch(Exception ex)
 				{
@@ -252,15 +306,39 @@ public class PlainTextExporter implements IMemoryExporter {
 					fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					
-					BigInteger length = getLength();
-					String endString = "0x" + getStartAddress().add(length).toString(16); //$NON-NLS-1$
 					fStartText.setText(fStartText.getText().trim());
+					
+					BigInteger length = getLength();
+					String endString;
+					BigInteger startAddress = getStartAddress();
+					BigInteger endAddress = startAddress.add(length);
+					
+					if(length.compareTo(BigInteger.ZERO) <= 0) {
+						if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+							endString = endAddress.toString(16); //$NON-NLS-1$
+						}
+						else {
+							endString = "0x" + endAddress.toString(16); //$NON-NLS-1$
+						}
+					}
+					else {
+						endString = "0x" + endAddress.toString(16); //$NON-NLS-1$
+					}
+					
 					fEndText.setText(endString);
 					
 					if(length.compareTo(BigInteger.ZERO) <= 0) {
 						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 					}
+					
+					if(startAddress.compareTo(BigInteger.ZERO) < 0) {
+						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
+					
+					if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
 				}
 				catch(Exception ex)
 				{
diff --git a/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/RAWBinaryExporter.java b/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/RAWBinaryExporter.java
index 0a622e17333..1f4190cafbd 100644
--- a/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/RAWBinaryExporter.java
+++ b/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/RAWBinaryExporter.java
@@ -158,11 +158,41 @@ public class RAWBinaryExporter implements IMemoryExporter
 
 		textValue = fProperties.get(TRANSFER_START);
 		fStartText.setText(textValue != null ? textValue : "0x0"); //$NON-NLS-1$
+		
+		try
+		{
+			getStartAddress();
+		}
+		catch(Exception e)
+		{
+			fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+		}
 
 		textValue = fProperties.get(TRANSFER_END);
 		fEndText.setText(textValue != null ? textValue : "0x0"); //$NON-NLS-1$
-
-		fLengthText.setText(getEndAddress().subtract(getStartAddress()).toString());
+		
+		try
+		{
+			getEndAddress();
+		}
+		catch(Exception e)
+		{
+			fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+		}
+		
+		try
+		{
+			BigInteger length = getEndAddress().subtract(getStartAddress());
+			fLengthText.setText(length.toString());
+			if(length.compareTo(BigInteger.ZERO) <= 0) {
+				fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+			}
+		}
+		catch(Exception e)
+		{
+			fLengthText.setText("0");
+			fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+		}
 		
 		fileButton.addSelectionListener(new SelectionListener() {
 
@@ -196,13 +226,25 @@ public class RAWBinaryExporter implements IMemoryExporter
 					fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					
-					BigInteger actualLength = getEndAddress().subtract(getStartAddress());
+					BigInteger startAddress = getStartAddress();
+					BigInteger actualLength = getEndAddress().subtract(startAddress);
 					fLengthText.setText(actualLength.toString());
 					
 					if(actualLength.compareTo(BigInteger.ZERO) <= 0) {
 						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 					}
+					
+					if(startAddress.compareTo(BigInteger.ZERO) < 0) {
+						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
+					
+					BigInteger endAddress = getEndAddress();
+					if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
 				}
 				catch(Exception ex)
 				{
@@ -231,6 +273,18 @@ public class RAWBinaryExporter implements IMemoryExporter
 						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 					}
+					
+					BigInteger startAddress = getStartAddress();
+					if(startAddress.compareTo(BigInteger.ZERO) < 0) {
+						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
+					
+					BigInteger endAddress = getEndAddress();
+					if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
 				}
 				catch(Exception ex)
 				{
@@ -253,15 +307,39 @@ public class RAWBinaryExporter implements IMemoryExporter
 					fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					
-					BigInteger length = getLength();
-					String endString = "0x" + getStartAddress().add(length).toString(16); //$NON-NLS-1$
 					fStartText.setText(fStartText.getText().trim());
+					
+					BigInteger length = getLength();
+					String endString;
+					BigInteger startAddress = getStartAddress();
+					BigInteger endAddress = startAddress.add(length);
+					
+					if(length.compareTo(BigInteger.ZERO) <= 0) {
+						if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+							endString = endAddress.toString(16); //$NON-NLS-1$
+						}
+						else {
+							endString = "0x" + endAddress.toString(16); //$NON-NLS-1$
+						}
+					}
+					else {
+						endString = "0x" + endAddress.toString(16); //$NON-NLS-1$
+					}
+					
 					fEndText.setText(endString);
 					
 					if(length.compareTo(BigInteger.ZERO) <= 0) {
 						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 					}
+					
+					if(startAddress.compareTo(BigInteger.ZERO) < 0) {
+						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
+					
+					if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
 				}
 				catch(Exception ex)
 				{
diff --git a/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/SRecordExporter.java b/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/SRecordExporter.java
index c76326874f8..9484110a842 100644
--- a/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/SRecordExporter.java
+++ b/memory/org.eclipse.cdt.debug.ui.memory.transport/src/org/eclipse/cdt/debug/ui/memory/transport/SRecordExporter.java
@@ -249,13 +249,25 @@ public class SRecordExporter implements IMemoryExporter
 					fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					
-					BigInteger actualLength = getEndAddress().subtract(getStartAddress());
+					BigInteger startAddress = getStartAddress();
+					BigInteger actualLength = getEndAddress().subtract(startAddress);
 					fLengthText.setText(actualLength.toString());
 					
 					if(actualLength.compareTo(BigInteger.ZERO) <= 0) {
 						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 					}
+					
+					if(startAddress.compareTo(BigInteger.ZERO) < 0) {
+						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
+					
+					BigInteger endAddress = getEndAddress();
+					if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
 				}
 				catch(Exception ex)
 				{
@@ -284,6 +296,18 @@ public class SRecordExporter implements IMemoryExporter
 						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 					}
+					
+					BigInteger startAddress = getStartAddress();
+					if(startAddress.compareTo(BigInteger.ZERO) < 0) {
+						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
+					
+					BigInteger endAddress = getEndAddress();
+					if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
 				}
 				catch(Exception ex)
 				{
@@ -306,15 +330,39 @@ public class SRecordExporter implements IMemoryExporter
 					fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
 					
-					BigInteger length = getLength();
-					String endString = "0x" + getStartAddress().add(length).toString(16); //$NON-NLS-1$
 					fStartText.setText(fStartText.getText().trim());
+					
+					BigInteger length = getLength();
+					String endString;
+					BigInteger startAddress = getStartAddress();
+					BigInteger endAddress = startAddress.add(length);
+					
+					if(length.compareTo(BigInteger.ZERO) <= 0) {
+						if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+							endString = endAddress.toString(16); //$NON-NLS-1$
+						}
+						else {
+							endString = "0x" + endAddress.toString(16); //$NON-NLS-1$
+						}
+					}
+					else {
+						endString = "0x" + endAddress.toString(16); //$NON-NLS-1$
+					}
+					
 					fEndText.setText(endString);
 					
 					if(length.compareTo(BigInteger.ZERO) <= 0) {
 						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 						fLengthText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
 					}
+					
+					if(startAddress.compareTo(BigInteger.ZERO) < 0) {
+						fStartText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
+					
+					if(endAddress.compareTo(BigInteger.ZERO) < 0) {
+						fEndText.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_RED));
+					}
 				}
 				catch(Exception ex)
 				{