Hi Denis,

We earlier had a chat about the new Mapping feature of DataObjects.net. We discovered a bug in the domain build routine that did not do correct testing for null values when a defaultschema was set for the domain that was not available in the database.

We set up the web.config correctly and the defaultschema is present in the DB. Now a weird thing is happening on some computers (mind you not on all computers we use). On my local system everything is shiny and running good but on the system of colleague of mine we get a null reference exception I can not explain. Below is the stacktrace and web.config. When we change the 'PerformSafely' to 'Skip' the application runs fine.

Regards Paul

<configuration>
  <configSections>
    <section name="Xtensive.Orm" type="Xtensive.Orm.Configuration.Elements.ConfigurationSection, Xtensive.Orm"/>
    <!--<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />-->
  </configSections>
  <Xtensive.Orm>
    <domains>
      <!-- The PerformSafely attribute below can be overwritten in the DataContext.OpenSession() -->
      <domain name="Default" defaultSchema="DataObjects" provider="sqlserver" connectionString="Data Source=localhost;Initial Catalog=Controlit_Facturatie;Persist Security Info=True;Integrated Security=True;MultipleActiveResultSets=True" upgradeMode="PerformSafely">
        <mappingRules>
          <rule namespace="Projecten.Model.Entities" schema="Projecten"/>
          <rule namespace="Fortrus.Reporting.Model.Entities" schema="Reporting"/>
        </mappingRules>
        <types>
          <add assembly="Fortrus.Reporting.Model"/>
          <add assembly="Projecten.Model"/>
          <!--<add assembly="Xtensive.Orm.Security"/>-->
        </types>
        <sessions>
          <!-- AllowSwitching is nodig voor Telerik Reporting om Session switching toe te staan 
               Telerik werkt nl. met worker threads en dat veroorzaakt een exception wanneer deze
               optie niet aan staat -->
          <session name="default" options="ServerProfile"/>
        </sessions>
      </domain>
    </domains>
  </Xtensive.Orm>

 [NullReferenceException: Object reference not set to an instance of an object.]
   Xtensive.Orm.Web.SessionManager.EnsureDomainIsBuilt() +111
   Xtensive.Orm.Web.SessionManager.ProvideSession() +37
   Xtensive.Orm.Web.SessionManager.EnsureSessionIsProvided() +120
   Xtensive.Orm.Web.SessionManager.<EnsureDomainIsBuilt>b__7() +19
   Xtensive.Orm.Session.get_Current() +47
   Xtensive.Orm.Session.Demand() +9
   Projecten.Model.Entities.OpdrachtgeverEntity.SynchronizeOpdrachtgeversWithCit() in c:\NotScanned\Ontwikkeling\ControlIT\trunk\Projecten.Model\Entities\OpdrachtgeverEntity.cs:169
   Projecten.Viewmodel.VMOpdrachtgeverEntity.SynchronizeOpdrachtgeversWithCit() in c:\NotScanned\Ontwikkeling\ControlIT\trunk\Projecten.Viewmodel\VMOpdrachtgeverEntity.cs:14
   Projecten.WebApplication.MvcApplication.MvcApplicationBeginRequest(Object sender, EventArgs e) in c:\NotScanned\Ontwikkeling\ControlIT\trunk\Projecten.WebApplication\Global.asax.cs:86
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +136
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronou