diff --git a/.gwt/.gwt-log b/.gwt/.gwt-log
index 759c848..1a4e73f 100644
--- a/.gwt/.gwt-log
+++ b/.gwt/.gwt-log
@@ -5946,3 +5946,35 @@ Compiling...
    Compilation completed in 0.00 seconds
 Removing invalidated units
 Finding entry point classes
+Public resources found in...
+Translatable source found in...
+Found 0 cached/archived units.  Used 0 / 2719 units from cache.
+Compiling...
+   30% complete (ETR: 9 seconds)
+   30% complete (ETR: 9 seconds)
+   30% complete (ETR: 9 seconds)
+   30% complete (ETR: 9 seconds)
+   40% complete (ETR: 8 seconds)
+   50% complete (ETR: 6 seconds)
+   60% complete (ETR: 4 seconds)
+   70% complete (ETR: 3 seconds)
+   80% complete (ETR: 2 seconds)
+   90% complete (ETR: 1 seconds)
+   100% complete (ETR: 0 seconds)
+   Compilation completed in 12.44 seconds
+Removing invalidated units
+Finding entry point classes
+Public resources found in...
+Translatable source found in...
+Found 2719 cached/archived units.  Used 2719 / 2719 units from cache.
+Compiling...
+   Compilation completed in 0.00 seconds
+Removing invalidated units
+Finding entry point classes
+Public resources found in...
+Translatable source found in...
+Found 2719 cached/archived units.  Used 2719 / 2719 units from cache.
+Compiling...
+   Compilation completed in 0.00 seconds
+Removing invalidated units
+Finding entry point classes
diff --git a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/DeleteColumnPanel.java b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/DeleteColumnPanel.java
index 653c3db..e26aa8b 100644
--- a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/DeleteColumnPanel.java
+++ b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/DeleteColumnPanel.java
@@ -23,6 +23,7 @@ import com.allen_sauer.gwt.log.client.Log;
 import com.google.gwt.core.client.GWT;
 import com.google.gwt.core.client.Scheduler;
 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
+import com.google.gwt.event.shared.UmbrellaException;
 import com.google.gwt.user.client.rpc.AsyncCallback;
 import com.google.web.bindery.event.shared.EventBus;
 import com.sencha.gxt.cell.core.client.ButtonCell.IconAlign;
@@ -239,10 +240,17 @@ public class DeleteColumnPanel extends FramedPanel implements
 					}
 
 					public void onSuccess(ArrayList<ColumnData> result) {
-						Log.trace("loaded " + result.size() + " ColumnData");
-						callback.onSuccess(new ListLoadResultBean<ColumnData>(
-								result));
+						try {
+							Log.debug("loaded " + result.size() + " ColumnData");
+							callback.onSuccess(new ListLoadResultBean<ColumnData>(
+									result));
 
+						} catch(UmbrellaException e){
+							Log.debug("Umbrella exception "+e.getLocalizedMessage());
+						} catch (com.google.web.bindery.event.shared.UmbrellaException e){
+							Log.debug("Umbrella exception "+e.getLocalizedMessage());
+						}
+						
 					}
 
 				});