The Outbound Enabler received an unexpectedly large HTTP chunk length in the response from the Relay Server. A legitimate Relay Server should not cause this problem. Check the -cr switch and make sure a Relay Server is running there by using a Web browser to fetch the status page from the Relay Server. A typical status page URL looks like http://MyHost:80/ias_relay_server/server/rs_server.dll for IIS and http://MyHost:80/srv/iarelayserver for Apache.