Frontend crashes when clicking on a document

• start reviewed actions application
• log in as "demo"
• navigate to /workflow-demo/myarticle/myarticle
• when clicking on myarticle the frontend crashes with a markup exception in the EditorPlugin:

WicketMessage: Unable to find component with id 'value' in [MarkupContainer [Component id = 1, page = org.hippoecm.frontend.Home, path = 4:rootPlugin:contentPlugin:editor:properties:4:values:1.Item, isVisible = true, isVersioned = true]]. This means that you declared wicket:id=value in your markup, but that you either did not add the component to your page at all, or that the hierarchy does not match.
[markup = file:/C:/dev/hippo-ecm/trunk/frontend/plugins/target/classes/org/hippoecm/frontend/plugins/admin/editor/EditorPlugin.html

This seems to be related to the "paths" property not being recognized as multivalue property:

javax.jcr.ValueFormatException: /workflow-demo/myarticle/myarticle/hippo:paths is multi-valued and can therefore only be retrieved as an array of values