I removed the usage of the classes org.jboss.portal.common.value.* in the portlet container and instead use a List for a preference value. This will affect the implementation of the property store implementation build on top of hibernate. I plan to remove the entire package from common once 2.7 does not use it anymore as it should not be use elsewhere. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4144104#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...