Hi, Newbie to orion im afraid. ive tried following the guide to clustering, which says it can be tested between two orions serer on the same machine as long as thier ports differ. I start the load balancing, but when i start both orions up i get the following message on both: "Unable to initialize clustering : Error initializing clustering(at localhost/127.0.0.1:9128) : Unable to connect : Unknown Error (java.lang.InstantiationException)" I havent specified a different host or port in the cluster-config tags in my web-apps - should i? Is there something i missed, cos i thought i'd followed the guide to a tee. Cheers Darren