-Err.
System.Xml.Linq

 at System.Xml.Linq.XAttribute..ctor(XName name, Object value)
 at Picto.O2L.Page.OutXML_REQ(XElement XNod)
 at Picto.O2L.Page.TraiteNode(XElement XNod, String NodName)
 at Picto.fr_Default.MyO2LPage.TraiteNode(XElement XNod, String NodName)
 at Picto.O2L.Page.TraiteNodes(XDocument XDoc)
 at Picto.O2L.Page.BuildPage()
 at Picto.O2L.Page.Traite(Page page, String RelativeRoot)

Value cannot be null.
Parameter name: value