Developer forum

Doing the following:

            Dynamicweb.Modules.UserManagement.User F = new Dynamicweb.Modules.UserManagement.User();
            F.Name      = name;
            F.Email = F.UserName  = email;
            F.Password = password;
            F.Zip = zip;
            F.Address = adress;
            F.Active = true;
            F.AllowBackend = true;
            F.Save();

Gives me this error message:

[NullReferenceException: Object reference not set to an instance of an object.]
   Dynamicweb.Modules.UserManagement.User.get_Current(PagePermissionLevels level) +423
   Dynamicweb.Modules.UserManagement.AuditUserInfo.NotifyUserSaving(Boolean IsNewUser, Boolean FromImport) +62
   Dynamicweb.Modules.UserManagement.User.Save() +155

Any idea on, why this error happens?