Environment:

• EPiServer CMS 6 R2
• EPiServer Relate 2 R2 on top of above

Issue:

• Trying to add user programmatically but fails and get this error:    "Exception message: Value cannot be null.
  Parameter name: value"

This happens when I try to add user or try geta guid.

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IUser newUser = CommunitySystem.CurrentContext.DefaultSecurity.GetUserByUserName(EmailBox.Text.Trim(',')) as IUser;

                if (newUser == null)
                {
                    DatabaseHandler.Instance.RunInTransaction(delegate
                    {
                        newUser = (IUser)CommunitySystem.CurrentContext.DefaultSecurity.NewUser;
                        newUser.UserName = UserNameBox.Text.Trim(',');
                        newUser.EMail = EmailBox.Text.Trim(',');
                        newUser.Password = PasswordBox.Text.Trim(',');
                        newUser.GivenName = FirstNameBox.Text.Trim(',');
                        newUser.SurName = LastNameBox.Text.Trim(',');
                        newUser.Alias = String.Format("{0} {1}", newUser.GivenName, newUser.SurName);
                        newUser.Culture = System.Globalization.CultureInfo.CurrentUICulture;
                  
                        newUser.BirthDate = new DateTime(2008, 3, 9, 16, 5, 7, 123);

                        activationGuid = (Guid)CommunitySystem.CurrentContext.DefaultSecurity.AddUserToActivate(newUser); // Error!******
                        //newUser = (IUser)CommunitySystem.CurrentContext.DefaultSecurity.AddUser(newUser); // Error!*******
                                          
                    });
                }