What is causing this Java exception: RuntimeDelegateImpl incompatible with javax.ws.rs.ext.RuntimeDelegate?

Question

I was wondering if anyone has any idea what could be causing this exception. When I google search it has almost no results. If anyone can help let met know.

    Caused by: java.lang.ClassCastException: org.apache.wink.common.internal.runtime.RuntimeDelegateImpl incompatible with javax.ws.rs.ext.RuntimeDelegate
    at javax.ws.rs.ext.RuntimeDelegate.getInstance(RuntimeDelegate.java:103)
    at javax.ws.rs.core.UriBuilder.<clinit>(UriBuilder.java:71)
    at java.lang.J9VMInternals.initializeImpl(Native Method)
    at java.lang.J9VMInternals.initialize(J9VMInternals.java:235)
    ... 40 more

Thanks