Grid events not being fired.

Hi:
I have a problem with Smart gwt, using a Grid embeded in a popup box (Dialog class). The thing is that the CellClick and FieldClick events, are not being fired by SmartGWT. Here is the code:

         Record record = event.getRecord();		     
		  winModal = new Dialog();			  
		  membersEditBox = new DepartmentMembersEditBox(DepartmentMgmtViewImpl.this);				 
          membersEditBox.initialize(record);          
          winModal.setTitle("");
          
		  winModal.centerInPage();		          
          winModal.setAutoSize(true);
          winModal.addItem(membersEditBox);
          winModal.show();  
          winModal.addCloseClickHandler(new CloseClickHandler(){

			@Override
			public void onCloseClick(CloseClientEvent event) {
				clearPopUp();					
			}
        	  
          });

…
membersEditBox is the Composite wich contains the grid. I add a grid event like this:

            ListGridField gridFieldDelete = this.addGridField(fieldDelete, 70);
		
	gridFieldDelete.addRecordClickHandler(new RecordClickHandler(){
		@Override
		public void onRecordClick(final RecordClickEvent event) {
			deleteActions(event.getRecord());
		}			
	});		

The event is fired if I add the grid into a non popup window. I really dont know what could be the problem, since the event is not being fired at all.

Thanks in advance.