livevilfr - 2017-03-13

Hi!
I'm currently testing libreplan v1.4.1 on a local installation of Ubuntu 14.04. I 'm encountering an error when I try to assign a criterion in the task properties, I get the following error:

Message - Cannot find associated CollectionItem=<Listbox null>, binding=[binder:org.zkoss.zkplus.databind.AnnotateDataBinder@44aa5f, comp:<Listbox null>, attr:model, expr:hoursGroupWrapper.validCriterions, load-when:null, save-when:null, load-after:null, save-after:null, load:true, save:false, converter:org.zkoss.zkplus.databind.ListModelConverter@d6910], collectionComp=<Row null>

Type d'exception    class org.zkoss.zk.ui.UiException
Code d'état 500
Traces de la pile   org.zkoss.zk.ui.UiException: Cannot find associated CollectionItem=<Listbox null>, binding=[binder:org.zkoss.zkplus.databind.AnnotateDataBinder@44aa5f, comp:<Listbox null>, attr:model, expr:hoursGroupWrapper.validCriterions, load-when:null, save-when:null, load-after:null, save-after:null, load:true, save:false, converter:org.zkoss.zkplus.databind.ListModelConverter@d6910], collectionComp=<Row null>
                    at org.zkoss.zkplus.databind.DataBinder$LoadOnSaveEventListener.loadAllBindings(DataBinder.java:1572)
                    at org.zkoss.zkplus.databind.DataBinder$LoadOnSaveEventListener.myLoadAllNodes(DataBinder.java:1501)
                    at org.zkoss.zkplus.databind.DataBinder$LoadOnSaveEventListener.myLoadAllNodes(DataBinder.java:1510)
                    at org.zkoss.zkplus.databind.DataBinder$LoadOnSaveEventListener.loadAllNodes(DataBinder.java:1458)
                    at org.zkoss.zkplus.databind.DataBinder$LoadOnSaveEventListener.doLoad(DataBinder.java:1447)
                    at org.zkoss.zkplus.databind.DataBinder$LoadOnSaveEventListener.onEvent(DataBinder.java:1424)
                    at org.zkoss.zk.ui.impl.EventProcessor.process0(EventProcessor.java:192)
                    at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:138)
                    at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.process0(EventProcessingThreadImpl.java:517)
                    at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.run(EventProcessingThreadImpl.java:444)

... followed by a java.lang.NullPointerException
I also got that on the on line demo.

I just starting with libreplan, to see if it is suitable for my needs, so chances are I'm doing something wrong.
I someone could help, I would be glad!