I have this issue, the system has been updated but the database (in Oracle) wasn´t update.
When I use the system updgrade tool database (I don´t remember the name) send me the next text:
System.ArgumentException: Requested value 'ListViewResult' was not found.
at System.Enum.EnumResult.SetFailure(ParseFailureKind failure, String failureMessageID, Object failureMessageFormatArgument)
at System.Enum.TryParseEnum(Type enumType, String value, Boolean ignoreCase, EnumResult& parseResult)
at System.Enum.Parse(Type enumType, String value, Boolean ignoreCase)
at DocuWare.Common.XML.XMLStorage.XMLObjectFromString(String value, Type type, Boolean ignoreInvalidEnums)
at DocuWare.Common.XML.XMLStorage.SetAttrSimpleValue(String val, StaticMemberInfo info)
at DocuWare.Common.XML.XMLStorage.FromXMLAttr(XmlNode node, StaticMemberInfo info)
at DocuWare.Common.XML.XMLStorage.FromXMLIterate(XmlNode node, StaticMemberInfo info)
at DocuWare.Common.XML.XMLStorage.FromXML(XmlNode node)
at DocuWare.Common.XML.XMLStorage.IterateNodeObject(XmlNode node, XMLStorage stg)
at DocuWare.Common.XML.XMLStorage.IterateNodeObject(XmlNode node, XMLCompoundAttribute compAttr)
at DocuWare.Common.XML.XMLStorage.FromXMLTagIterateIList(XmlNode node, StaticMemberInfo info)
at DocuWare.Common.XML.XMLStorage.FromXMLTagIterate(XmlNode node, StaticMemberInfo info)
at DocuWare.Common.XML.XMLStorage.FromXMLIterate(XmlNode node, StaticMemberInfo info)
at DocuWare.Common.XML.XMLStorage.FromXML(XmlNode node)
at DocuWare.Common.XML.XMLStorage.DocFromXML(XmlDocument doc)
at DocuWare.Common.XML.XMLStorage.LoadXMLFrom(String input)
at DocuWare.Settings.WebClient.WebInstance.LoadInstanceFromString(String settings)
at DocuWare.Upgrade.To51c.WebInstanceUpgrader.CommitChanges()
RollBack Transaction!!!!
System.Exception: System.ArgumentException: Requested value 'ListViewResult' was not found.