Mass Update on shipment stop Screen Set

Mass Update on shipment stop Screen Set is not working, even not with the standard screens by enabling it for a field, does anybody has an idea why?
The finder result is showing up, new values can be entered, but when saving the changes this error is shown:

java.lang.ArrayIndexOutOfBoundsException: 1
at glog.ejb.shipment.db.ShipmentStopPK.valueOf(Shipme ntStopPK.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at glog.server.wrapper.WrapperEventInfo.toPkCollectio n(WrapperEventInfo.java:349)
at glog.server.wrapper.WrapperEventInfo.setGid(Wrappe rEventInfo.java:189)
at glog.webserver.finder.ResultSaveServlet.saveChild( ResultSaveServlet.java:868)
at glog.webserver.finder.ResultSaveServlet.saveDocume nt(ResultSaveServlet.java:820)
at glog.webserver.finder.ResultSaveServlet.getDocumen t(ResultSaveServlet.java:169)
at glog.webserver.util.AbstractServletProducer.proces s(AbstractServletProducer.java:77)
at glog.webserver.util.BaseServlet.service(BaseServle t.java:977)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:723)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:210)
at glog.webserver.screenlayout.FrameInterceptFilter.d oFilter(FrameInterceptFilter.java:31)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:246)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:210)
at glog.webserver.screenlayout.CsrfFilter.doFilter(Cs rfFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:246)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:210)
at glog.webserver.session.ParameterValidation.doFilte r(ParameterValidation.java:31)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:246)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:210)
at glog.webserver.screenlayout.ClientSessionTracker.d oFilter(ClientSessionTracker.java:74)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:246)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:210)
at glog.webserver.util.SetCharacterEncodingFilter.doF ilter(SetCharacterEncodingFilter.java:45)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:246)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:170)
at org.apache.catalina.authenticator.AuthenticatorBas e.invoke(AuthenticatorBase.java:473)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:120)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:405)
at org.apache.coyote.http11.AbstractHttp11Processor.p rocess(AbstractHttp11Processor.java:964)
at org.apache.coyote.AbstractProtocol$AbstractConnect ionHandler.process(AbstractProtocol.java:515)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProce ssor.run(JIoEndpoint.java:304)
at java.util.concurrent.ThreadPoolExecutor$Worker.run Task(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:909)
at java.lang.Thread.run(Thread.java:662)