OFP: crypting error during CSIT

During 1.3 base CSIT:

2014-08-14 22:40:24.487 CEST [OFHandshake-0-0] ERROR o.o.o.o.m.c.ErrorHandlerSimpleImpl - exception -> rpcError:Channel disconnected;, session -> null
java.lang.Exception: rpcError:Channel disconnected;
at org.opendaylight.openflowplugin.openflow.md.core.RpcUtil.smokeRpc(RpcUtil.java:34) ~[bundlefile:na]
at org.opendaylight.openflowplugin.openflow.md.core.HandshakeManagerImpl.sendHelloMessage(HandshakeManagerImpl.java:287) ~[bundlefile:na]
at org.opendaylight.openflowplugin.openflow.md.core.HandshakeManagerImpl.shake(HandshakeManagerImpl.java:94) ~[bundlefile:na]
at org.opendaylight.openflowplugin.openflow.md.core.HandshakeStepWrapper.run(HandshakeStepWrapper.java:47) [bundlefile:na]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_65]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_65]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_65]

This is not really useful for network operator. Please improve the error message.