jbxb_1_0.xsd has the following validation errors:

Error 1, line 19:

src-resolve.4.2: Error resolving component 'jbxb:package'. It was detected that 'jbxb:package' is in namespace 'http://www.jboss.org/xml/ns/jbxb', but components from this namespace are not
referenceable from schema document 'file:///home/rob/apps/eclipse/workspaces/runtime-EclipseApplication/Dweberw/WebContent/WEB-INF/schema/jbxb_1_0.xsd'. If this is the incorrect namespace, perhaps
the prefix of 'jbxb:package' needs to be changed. If this is the correct namespace, then an appropriate 'import' tag should be added to 'file:///home/rob/apps/eclipse/workspaces/runtime-EclipseApplication/
Dweberw/WebContent/WEB-INF/schema/jbxb_1_0.xsd'.

Error 2, line 94:

src-element.3: Element 'class' has both a 'type' attribute and a 'anonymous type' child. Only one of these is allowed for an element.