Databinding-echo sample fails with an Exception

The databinding-echo sample fails with the following exception:
[java] ComponentA --> Received message: <message><foo>123</foo></message> [java.lang.String]
[java] Exception in thread "main" java.lang.NullPointerException
[java] at org.apache.tuscany.sca.implementation.java.context.ReflectiveInstanceFactory.newInstance(ReflectiveInstanceFactory.java:58)
[java] at org.apache.tuscany.sca.implementation.java.invocation.JavaComponentContextProvider.createInstanceWrapper(JavaComponentContextProvider.java:93)
[java] at org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationProvider.createInstanceWrapper(JavaImplementationProvider.java:158)
[java] at org.apache.tuscany.sca.core.scope.AbstractScopeContainer.createInstanceWrapper(AbstractScopeContainer.java:65)
[java] at org.apache.tuscany.sca.core.scope.StatelessScopeContainer.getWrapper(StatelessScopeContainer.java:38)
[java] at org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.invoke(JavaImplementationInvoker.java:85)
[java] at org.apache.tuscany.sca.core.databinding.wire.DataTransformationInteceptor.invoke(DataTransformationInteceptor.java:73)
[java] at org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:233)
[java] at org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:130)
[java] at $Proxy6.call(Unknown Source)
[java] at dbecho.ComponentAImpl.call(ComponentAImpl.java:41)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
[java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[java] at java.lang.reflect.Method.invoke(Method.java:615)
[java] at org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.invoke(JavaImplementationInvoker.java:105)
[java] at org.apache.tuscany.sca.core.databinding.wire.PassByValueInteceptor.invoke(PassByValueInteceptor.java:49)
[java] at org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:233)
[java] at org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:130)
[java] at $Proxy6.call(Unknown Source)
[java] at dbecho.EchoDataBindingClient.main(EchoDataBindingClient.java:34)
[java] Java Result: 1