Hi,

I have developed a set of asp.net user controls which allow which allow users of the website to, amongst other things, manage their profile.  The user controls were working just fine in Umbraco V4.0.2.1 but I am now experiencing problems after upgrading to V4.5.2. 

The problem is occurring during the login process.  I was using:

Member.GetMemberFromLoginNameAndPassword(Me.txtLoginUsername.Text, Me.txtLoginPassword.Text)

to log the user in but after the upgarde I got a message saying that this method is now obsolete.  I, therefore, used the suggested method which is:

System.Web.Security.Membership.ValidateUser(Me.txtLoginUsername.Text, Me.txtLoginPassword.Text)

but this produces the following error:

[NullReferenceException: Object reference not set to an instance of an object.]
   umbraco.cms.businesslogic.Content.XmlPopulate(XmlDocument xd, XmlNode& x, Boolean Deep) +969
   umbraco.cms.businesslogic.member.Member.generateXmlWithoutSaving(XmlDocument xd) +93
   umbraco.cms.businesslogic.member.Member.XmlGenerate(XmlDocument xd) +46
   umbraco.cms.businesslogic.member.Member.Save() +155
   umbraco.providers.members.UmbracoMembershipProvider.ValidateUser(String username, String password) +673
   System.Web.Security.Membership.ValidateUser(String username, String password) +46
   MTLProfile.MTLProfile.btnLogin_Click(Object sender, EventArgs e) +136
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565

Has anyone else experienced this?  Or does anyone have any idea what I am doing wrong.  I have searched the forum but was unable to find anything relating to this problem.

Thanks for your time.