### Eclipse Workspace Patch 1.0
#P org.eclipse.riena.ui.ridgets.swt
Index: src/org/eclipse/riena/internal/ui/ridgets/swt/NumericTextRidget.java
===================================================================
RCS file: /cvsroot/rt/org.eclipse.riena/org.eclipse.riena.ui.ridgets.swt/src/org/eclipse/riena/internal/ui/ridgets/swt/NumericTextRidget.java,v
retrieving revision 1.37
diff -u -r1.37 NumericTextRidget.java
--- src/org/eclipse/riena/internal/ui/ridgets/swt/NumericTextRidget.java	25 May 2010 12:41:23 -0000	1.37
+++ src/org/eclipse/riena/internal/ui/ridgets/swt/NumericTextRidget.java	28 May 2010 11:23:07 -0000
@@ -19,6 +19,7 @@
 
 import org.eclipse.core.databinding.BindingException;
 import org.eclipse.core.databinding.conversion.IConverter;
+import org.eclipse.core.databinding.observable.value.IObservableValue;
 import org.eclipse.core.runtime.Assert;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.FocusAdapter;
@@ -487,8 +488,12 @@
 	}
 
 	private void checkValue() {
-		Object value = getValueBindingSupport().getModelObservable().getValue();
-		Class<?> type = (Class<?>) getValueBindingSupport().getModelObservable().getValueType();
+		IObservableValue modelObservable = getValueBindingSupport().getModelObservable();
+		if (modelObservable == null) {
+			return;
+		}
+		Object value = modelObservable.getValue();
+		Class<?> type = (Class<?>) modelObservable.getValueType();
 		IConverter converter = getConverter(type, Integer.MAX_VALUE);
 		if (converter != null) {
 			checkNumber((String) converter.convert(value));