IllegalStateException: Node not found for requestcom.couchbase.client.core.message.binary.UpsertRequest

This could be user error, but when trying the couchbae hellworld tutorial: http://docs.couchbase.com/prebuilt/java-sdk-2.0-beta/topics/hello-couchbase.html, I receive the following exception:

Sep 05, 2014 10:30:02 AM com.couchbase.client.core.node.CouchbaseNode$5 call
INFO: Connected to Node 127.0.0.1
Sep 05, 2014 10:30:07 AM com.couchbase.client.core.node.CouchbaseNode$5 call
INFO: Disconnected from Node 127.0.0.1
Sep 05, 2014 10:30:07 AM com.couchbase.client.core.node.CouchbaseNode$5 call
INFO: Connected to Node jmorris-pc
Sep 05, 2014 10:30:07 AM com.couchbase.client.deps.com.lmax.disruptor.FatalExceptionHandler handleEventException
SEVERE: Exception processing: 2 com.couchbase.client.core.RequestEvent@7bcfceb7
java.lang.IllegalStateException: Node not found for requestcom.couchbase.client.core.message.binary.UpsertRequest@9c94115
at com.couchbase.client.core.node.locate.BinaryLocator.locateForCouchbaseBucket(BinaryLocator.java:126)
at com.couchbase.client.core.node.locate.BinaryLocator.locate(BinaryLocator.java:63)
at com.couchbase.client.core.RequestHandler.onEvent(RequestHandler.java:148)
at com.couchbase.client.core.RequestHandler.onEvent(RequestHandler.java:68)
at com.couchbase.client.deps.com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:128)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)

Exception in thread "pool-1-thread-2" java.lang.RuntimeException: java.lang.IllegalStateException: Node not found for requestcom.couchbase.client.core.message.binary.UpsertRequest@9c94115
at com.couchbase.client.deps.com.lmax.disruptor.FatalExceptionHandler.handleEventException(FatalExceptionHandler.java:45)
at com.couchbase.client.deps.com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:147)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.lang.IllegalStateException: Node not found for requestcom.couchbase.client.core.message.binary.UpsertRequest@9c94115
at com.couchbase.client.core.node.locate.BinaryLocator.locateForCouchbaseBucket(BinaryLocator.java:126)
at com.couchbase.client.core.node.locate.BinaryLocator.locate(BinaryLocator.java:63)
at com.couchbase.client.core.RequestHandler.onEvent(RequestHandler.java:148)
at com.couchbase.client.core.RequestHandler.onEvent(RequestHandler.java:68)
at com.couchbase.client.deps.com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:128)
... 3 more

Additional logging included. I am connecting to localhost CB server 2.5.