diff --git a/src/main/java/org/gcube/portlets/user/td/tablewidget/client/validation/ValidationsTasksPanel.java b/src/main/java/org/gcube/portlets/user/td/tablewidget/client/validation/ValidationsTasksPanel.java
index 6755159..d003c56 100644
--- a/src/main/java/org/gcube/portlets/user/td/tablewidget/client/validation/ValidationsTasksPanel.java
+++ b/src/main/java/org/gcube/portlets/user/td/tablewidget/client/validation/ValidationsTasksPanel.java
@@ -173,7 +173,13 @@ public class ValidationsTasksPanel extends FramedPanel implements
 			create();
 		}
 		store.commitChanges();
-		tree.expandAll();
+		
+		try{
+			tree.expandAll();
+		} catch (Throwable caught){
+			Log.error(caught.getLocalizedMessage());
+		}
+		
 		forceLayout();
 
 	}