NPE when connecting to memcached bucket without configured password

2012-09-28 09:53:31.562 INFO com.couchbase.client.CouchbaseMemcachedConnection: Added {QA sa=/10.3.3.135:11210, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue
java.lang.NullPointerException
        at net.spy.memcached.auth.PlainCallbackHandler.<init>(PlainCallbackHandler.java:50)
        at com.couchbase.client.CouchbaseConnectionFactory.getAuthDescriptor(CouchbaseConnectionFactory.java:187)
        at net.spy.memcached.MemcachedClient.<init>(MemcachedClient.java:197)
        at com.couchbase.client.CouchbaseClient.<init>(CouchbaseClient.java:230)
        at com.couchbase.client.CouchbaseClient.<init>(CouchbaseClient.java:200)
        at com.couchbase.cbc.App.main(App.java:69)

-- SNIPPET --

        CouchbaseClient cli = null;
        LinkedList<URI> uriList = new LinkedList<URI>();
        
        try {
            uriList.add(new URI("http://" + options.hostname + "/pools"));
            cli = new CouchbaseClient(
                    uriList,
                    options.bucket, options.username, options.password);
        } catch (Exception ex) {
            ex.printStackTrace();
            System.exit(-1);
        }