carbon/graphite errors

I am having an issue with graphite/carbon.

I am seeing errors in the webapp and carbon-cache log. I am using carbon-relay to relay to two local instances of carbon cache. I am running version 0.9.10.

carbon-relay.conf contains the following:
DESTINATIONS = 127.0.0.1:2200:a, 127.0.0.1:2201:b
RELAY_METHOD = consistent-hashing
REPLICATION_FACTOR = 1

and local_settings.py has:
CARBONLINK_HOSTS = ["127.0.0.1:7000:a", "127.0.0.1:7001:b"]

FWIW, CARBONLINK_HOSTS was misconfigured, pointing at the pickle receiver ports, which was causing connection lost errors in the webapp logs. Fixed that, then I stated getting errors shown below. I am not sure if this is a hash ring issue, or maybe an issue due to old code that would be remedied by running new code. Either way, I would like to get this optimized.

----Begin Log Output----

/opt/graphite/storage/log/carbon-cache/carbon-cache-a/console.log:

10/04/2014 00:24:36 :: Unhandled Error
Traceback (most recent call last):
  File "/opt/graphite/local/lib/python2.7/site-packages/twisted/python/log.py", line 84, in callWithLogger
    return callWithContext({"system": lp}, func, *args, **kw)
  File "/opt/graphite/local/lib/python2.7/site-packages/twisted/python/log.py", line 69, in callWithContext
    return context.call({ILogContext: newCtx}, func, *args, **kw)
  File "/opt/graphite/local/lib/python2.7/site-packages/twisted/python/context.py", line 118, in callWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "/opt/graphite/local/lib/python2.7/site-packages/twisted/python/context.py", line 81, in callWithContext
    return func(*args,**kw)
--- <exception caught here> ---
  File "/opt/graphite/local/lib/python2.7/site-packages/twisted/internet/posixbase.py", line 581, in _doReadOrWrite
    why = selectable.doRead()
  File "/opt/graphite/local/lib/python2.7/site-packages/twisted/internet/tcp.py", line 199, in doRead
    rval = self.protocol.dataReceived(data)
  File "/opt/graphite/local/lib/python2.7/site-packages/twisted/protocols/basic.py", line 755, in dataReceived
    self.stringReceived(packet)
  File "/opt/graphite/lib/carbon/protocols.py", line 100, in stringReceived
    for (metric, datapoint) in datapoints:
exceptions.ValueError: too many values to unpack

------

graphite1:/opt/graphite/storage/log/webapp/exception.log:

Thu Apr 10 00:26:27 2014 :: Exception Caught
Traceback (most recent call last):
  File "/opt/graphite/webapp/graphite/render/datalib.py", line 226, in fetchData
    cachedResults = CarbonLink.query(dbFile.real_metric)
  File "/opt/graphite/webapp/graphite/render/datalib.py", line 135, in query
    results = self.send_request(request)
  File "/opt/graphite/webapp/graphite/render/datalib.py", line 161, in send_request
    result = self.recv_response(conn)
  File "/opt/graphite/webapp/graphite/render/datalib.py", line 173, in recv_response
    len_prefix = recv_exactly(conn, 4)
  File "/opt/graphite/webapp/graphite/render/datalib.py", line 188, in recv_exactly
    raise Exception("Connection lost")
Exception: Connection lost