Hi

I am getting error while creating user from DNN admin side. User is created but mail is not sent to the user. This is the error trace I get.

DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Entities.Users.UserInfo.GetProperty(String strPropertyName, String strformat, CultureInfo formatProvider, UserInfo AccessingUser, Scope CurrentScope, Boolean& PropertyNotFound) at DotNetNuke.Services.Tokens.BaseCustomTokenReplace.replacedTokenValue(String strObjectName, String strPropertyName, String strformat) at DotNetNuke.Services.Tokens.BaseTokenReplace.ReplaceTokens(String strSourceText) at DotNetNuke.Services.Tokens.TokenReplace.ReplaceTokens(String strSourceText) at DotNetNuke.Services.Tokens.TokenReplace.ReplaceEnvironmentTokens(String strSourceText, ArrayList Custom, String CustomCaption) at DotNetNuke.Services.Localization.Localization.GetSystemMessage(String strLanguage, PortalSettings objPortal, String MessageName, UserInfo objUser, String ResourceFile, ArrayList Custom, String CustomCaption, Int32 AccessingUserID) at DotNetNuke.Services.Mail.Mail.SendMail(UserInfo user, MessageType msgType, PortalSettings settings) at DotNetNuke.Entities.Modules.UserModuleBase.CompleteUserCreation(UserCreateStatus createStatus, UserInfo newUser, Boolean notify, Boolean register) at DotNetNuke.Modules.Admin.Users.ManageUsers.UserCreateCompleted(Object sender, UserCreatedEventArgs e) --- End of inner exception stack trace ---

BANG on target !!

The admin email address was not valid. To check the admin user  for a  portal go to Admin setting --> Other setting and check admin user set in dropdown. Then go to users and check his email address if it is valid one.

And we are done. This solution worked for me :)