Hi, I see it working and it's so good. But i tried to use it in a vaadin

Directory StackPanel Extension for Vaadin
1

Hi,

I see it working and it’s so good.
But i tried to use it in a vaadin 7.7.10 project and im getting the following error:

13:12:44,865 SEVERE [com.vaadin.server.DefaultErrorHandler]
(default task-7) : java.lang.NoClassDefFoundError: com/vaadin/icons/VaadinIcons
at org.vaadin.addons.stackpanel.StackPanel.(StackPanel.java:71)
at org.vaadin.addons.stackpanel.StackPanel.extend(StackPanel.java:77)

Can someone help me?