This has just started on one of my sites. v8.0.3 when adding a new user. User gets created but notification is not delivered. SMTP server settings are correct.

Error is: 

"Object reference not set to an instance of an object.

at DotNetNuke.Entities.Users.UserInfo.GetProperty(String propertyName, String format, CultureInfo formatProvider, UserInfo accessingUser, Scope currentScope, Boolean& propertyNotFound)
   at DotNetNuke.Services.Tokens.BaseCustomTokenReplace.replacedTokenValue(String objectName, String propertyName, String format)
   at DotNetNuke.Services.Tokens.BaseTokenReplace.ReplaceTokens(String sourceText)
   at DotNetNuke.Services.Tokens.TokenReplace.ReplaceTokens(String sourceText)
   at DotNetNuke.Services.Tokens.TokenReplace.ReplaceEnvironmentTokens(String sourceText, IDictionary custom, String customCaption)
   at DotNetNuke.Services.Localization.Localization.GetSystemMessage(String strLanguage, PortalSettings portalSettings, String messageName, UserInfo userInfo, String resourceFile, ArrayList customArray, IDictionary customDictionary, String customCaption, Int32 accessingUserID)
   at DotNetNuke.Services.Mail.Mail.SendMail(UserInfo user, MessageType msgType, PortalSettings settings)
   at DotNetNuke.Modules.Admin.Users.EditUser.ProfileUpdateCompleted(Object sender, EventArgs e)
   at DotNetNuke.Entities.Modules.ProfileUserControlBase.OnProfileUpdateCompleted(EventArgs e)
   at DesktopModules.Admin.Security.DNNProfile.cmdUpdate_Click(Object sender, EventArgs e)
   at System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e)
   at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
   at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint"

Any help with this would be appreciated.

cheers
Martyn

Hi Sebastian,

No nothing has been deleted.

Is there any way of finding out which user property it's failing to find?
I've double checked and the site owner (admin) has added some properties to the user profile but I comparing with a vanilla install I cannot see any that any properties have been deleted. Perhaps a renaming would do it?