ClassCastException in ColumnData

[pepgrifell]

hi there,

I'm getting this error when calling the method layout() in a LayoutContainer object:

 
ClassCastException: com.extjs.gxt.ui.client.widget.layout.ColumnData

Probably I have an error in my view (a big one). The problem is that when I catch the error, I can't see the line that fails in my class. This is the stacktrace after calling layoutContainer.layout() in my class:

com.extjs.gxt.ui.client.widget.layout.AnchorLayout.onLayout(AnchorLayout.java:99)com.extjs.gxt.ui.client.widget.Layout.layout(Layout.java:93)com.extjs.gxt.ui.client.widget.Layout.onResize(Layout.java:239)com.extjs.gxt.ui.client.widget.Layout$1.handleEvent(Layout.java:52)com.extjs.gxt.ui.client.widget.Layout$1.handleEvent(Layout.java:1)com.extjs.gxt.ui.client.event.BaseObservable.fireEvent(BaseObservable.java:74)com.extjs.gxt.ui.client.widget.Component.fireEvent(Component.java:443)com.extjs.gxt.ui.client.widget.BoxComponent.setSize(BoxComponent.java:427)com.extjs.gxt.ui.client.widget.Layout.setSize(Layout.java:286)com.extjs.gxt.ui.client.widget.layout.AnchorLayout.onLayout(AnchorLayout.java:121)com.extjs.gxt.ui.client.widget.Layout.layout(Layout.java:93)com.extjs.gxt.ui.client.widget.Container.doLayout(Container.java:360)com.extjs.gxt.ui.client.widget.Container.layout(Container.java:455)com.extjs.gxt.ui.client.widget.LayoutContainer.layout(LayoutContainer.java:238)com.extjs.gxt.ui.client.widget.Container.doLayout(Container.java:376)com.extjs.gxt.ui.client.widget.Container.layout(Container.java:455)com.extjs.gxt.ui.client.widget.LayoutContainer.layout(LayoutContainer.java:238)com.extjs.gxt.ui.client.widget.Container.doLayout(Container.java:376)com.extjs.gxt.ui.client.widget.Container.layout(Container.java:455)com.extjs.gxt.ui.client.widget.LayoutContainer.layout(LayoutContainer.java:238)

In the onModuleLoad(), I have this code to catch exceptions:

GWT.setUncaughtExceptionHandler(
new GWT.UncaughtExceptionHandler() { 
      publicvoid onUncaughtException(Throwable error) { 
         Dispatcher.forwardEvent(AppEvents.ShowError, error); 
     } 

});

Should I put a try catch in my class ?

Thanks !

[fother]

post the code example