MyFaces NoSuchMethodError

java.lang.NoSuchMethodError - org.apache.myfaces.component.html.ext.HtmlDataTable.refresh(Ljavax/faces/context/FacesContext;)V

This exception can be thrown by MyFaces when the page backing bean doesn't return a String that is mapped in the navigation-rules in faces-config.xml (or wherever you have your mapping file).

Check for typos or a missing entry in the navigation rules.