Not needed to declare width or height properties in components inside a borderlayout

Hy,

A have a viewport wih layout border that has two items: one GridPanel and TreePanel. The documentation says that "the layout in the container will manage the size and position of the child components". So I am not declaring any width or height properties in GridPanel and neither TreePanel but I am getting this error when I comment these properties from TreePanel: "Layout run failed ".

Thanks

Not needed to declare width or height properties in components inside a borderlayout