The CTT is configured to use MessageSecurityMode = None and RequestedSecurityPolicyUri = None however the channel being used to connect to the server for this test is Basic256. The problem is with the function below that is used during ActivateSession:

function buildAnonymousIdentityToken( session, overrides ) {
var obj = new UaExtensionObject();
var policy = parseInt( readSetting( "/Server Test/Secure Channel/RequestedSecurityPolicyUri" ) );
var securityPolicyUri = SecurityPolicy.policyToString( policy );

Since the server checks whether the policyId presented is correct, this function will select the wrong policyId (the policyId for Anonymous login over None as opposed to the policyId for Anonymous login over Basic256).