Classcast exception is thrown when trying SOAP Server example using Drools Camel WAR on BRMS 6

Issue

• While trying to run the SOAP Server example using Drools camel WAR on Red Hat JBoss BRMS 6 server it throws a ClassCastException as shown below. How to fix this issue?
• Could it be related to the following JIRA raised in JBoss Community ?
  Kie :: Camel - ClassCast exception in PreCxfTransportSoapProcessor class

10:59:55,677 WARNING [org.apache.cxf.phase.PhaseInterceptorChain] (http-/82.112.124.146:8080-3) Interceptor for {http://soap.jax.drools.org/}CommandExecutor has thrown exception, unwinding now: org.apache.cxf.interceptor.Fault: org.apache.cxf.binding.soap.SoapMessage cannot be cast to java.lang.String
    at org.apache.camel.component.cxf.CxfConsumer$1.checkFailure(CxfConsumer.java:194) [camel-cxf-2.9.0.jar:2.9.0]
    at org.apache.camel.component.cxf.CxfConsumer$1.setResponseBack(CxfConsumer.java:174) [camel-cxf-2.9.0.jar:2.9.0]
    at org.apache.camel.component.cxf.CxfConsumer$1.syncInvoke(CxfConsumer.java:126) [camel-cxf-2.9.0.jar:2.9.0]
    at org.apache.camel.component.cxf.CxfConsumer$1.invoke(CxfConsumer.java:71) [camel-cxf-2.9.0.jar:2.9.0]
    at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:58) [cxf-rt-core-2.4.4.jar:2.4.4]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439) [rt.jar:1.6.0_45]
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [rt.jar:1.6.0_45]
    at java.util.concurrent.FutureTask.run(FutureTask.java:138) [rt.jar:1.6.0_45]
    at org.apache.cxf.workqueue.SynchronousExecutor.execute(SynchronousExecutor.java:37) [cxf-rt-core-2.4.4.jar:2.4.4]
    at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:106) [cxf-rt-core-2.4.4.jar:2.4.4]
    ...
Caused by: java.lang.ClassCastException: org.apache.cxf.binding.soap.SoapMessage cannot be cast to java.lang.String
    at org.drools.jax.soap.PreCxfTransportSoapProcessor.process(PreCxfTransportSoapProcessor.java:37) [drools-camel-5.4.0.Final.jar:5.4.0.Final]
    at org.drools.camel.component.DroolsPolicy$DroolsProcess.process(DroolsPolicy.java:326) [drools-camel-5.4.0.Final.jar:5.4.0.Final]
    at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61) [camel-core-2.9.0.jar:2.9.0]
    ...