--- a/flys-client/src/main/java/de/intevation/flys/client/client/ui/AbstractUIProvider.java	Mon Oct 15 09:29:25 2012 +0200
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/ui/AbstractUIProvider.java	Mon Oct 15 09:31:50 2012 +0200
@@ -1,6 +1,7 @@
 package de.intevation.flys.client.client.ui;
 
 import com.google.gwt.core.client.GWT;
+
 import com.smartgwt.client.util.SC;
 import com.smartgwt.client.widgets.Button;
 import com.smartgwt.client.widgets.Canvas;
@@ -38,6 +39,8 @@
 implements   UIProvider, HasStepForwardHandlers, ClickHandler,
              HasStepBackHandlers
 {
+    private static final long serialVersionUID = -1610874613377494184L;
+
     /** The message class that provides i18n strings.*/
     protected FLYSConstants MSG = GWT.create(FLYSConstants.class);