Memcached issues with ruby client

We have ROR application that uses MemCached for distributed cache.
As we have many issues with MemCached and its "clustering" we are considering to move to Infinispan for many goodies it provides.
The problem is that some commands that are issued against memcahe infinispan server die with error.

in ruby application we get errror:

ERROR – : MemCacheError (unexpected response "VALUE views/semantic/1 0 674 \r\n"): unexpected response "VALUE views/semantic/1 0 674 \r\n"

and in infinispan log I can find:

2010-08-19 12:21:37,330 ERROR [org.infinispan.server.core.AbstractProtocolDecoder$] (MemcachedServerWorker-1-7) Exception reported
java.nio.channels.ClosedChannelException

I will try to provide sample code to demonstrate error.