hi everybody i'm doing a process as study case with two human tasks. When i reclaim the human task associated to a group i get the following error before load the human task form

it happens with the human task example of jbpm 5.3.0 final examples too with the sales-rep user:

012-10-03 15:04:19,409 [DEBUG] parse {"id":3, "processInstanceId":"21", "processId":"com.sample.humantask", "name":"Request Review", "assignee":"sales-rep", "isBlocking":false, "isSignalling":false, "outcomes":[], "currentState":"ASSIGNED", "participantUsers":[], "participantGroups":[], "url":"http://localhost:8080/gwt-console-server/rs/form/task/3/render", "priority":0}

2012-10-03 15:04:19,420 [FATAL] Uncaught Exception:

com.google.gwt.core.client.JavaScriptException:

(TypeError): this$static is undefined

fileName: http://localhost:8080/jbpm-console/app/A648065FD2C101A07524EF32DE4F4440.cache.html

lineNumber: 13092

    at Unknown.$fillInStackTrace(StackTraceCreator.java:147)

    at Unknown.fillInStackTrace(StackTraceCreator.java:387)

    at Unknown.JavaScriptException_0(Throwable.java:46)

    at Unknown.caught_0(Exceptions.java:29)

    at Unknown.$update_8(AssignedTasksView.java:361)

    at Unknown.handleSuccessfulResponse_15(LoadTasksAction.java:77)

    at Unknown.onResponseReceived_5(AbstractRESTAction.java:78)

    at Unknown.$fireOnResponseReceived(Request.java:287)

    at Unknown.onReadyStateChange_0(RequestBuilder.java:395)

    at Unknown.anonymous(XMLHttpRequest.java:287)

    at Unknown.entry0(Impl.java:214)

    at Unknown.anonymous(Impl.java:57)

Any help would be appreciated. Thanks