Issue

After installing Roll Up Patch #4 on BRMS 5.3.1, we start to get following error:

2014-06-11 14:40:38,021 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/jboss-brms]] guvnorService: An IncompatibleRemoteServiceException was thrown while processing this call.
com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException: Invalid type signature for org.drools.guvnor.client.rpc.AssetPageRequest
    at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:315)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:206)
......
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:599)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:451)
    at java.lang.Thread.run(Thread.java:662)
Caused by: com.google.gwt.user.client.rpc.SerializationException: Invalid type signature for org.drools.guvnor.client.rpc.AssetPageRequest
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.validateTypeVersions(ServerSerializationStreamReader.java:931)
......
    at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:303)
    ... 32 more