I'm trying to create a basic class that will add a user when I pass in a username, password, and email address.  I keep obtaining the following error, though:

System.NullReferenceException: Object reference not set to an instance of an object. at System.Web.UI.UserControl.get_Request() at DotNetNuke.Entities.Modules.UserModuleBase.get_UserId() in C:\dotnetnuke\Library\Components\Users\UserModuleBase.vb:line 470 at DotNetNuke.Entities.Modules.UserModuleBase.get_AddUser() in C:\dotnetnuke\Library\Components\Users\UserModuleBase.vb:line 275 at DotNetNuke.Entities.Modules.UserModuleBase.get_User() in C:\dotnetnuke\Library\Components\Users\UserModuleBase.vb:line 442

My code is as follows:

using System;
using System.Collections.Generic;
using System.Web;

//Added:
using DotNetNuke.Entities.Modules;
using DotNetNuke.Security.Membership;
using DotNetNuke.Entities.Users;
using DotNetNuke.Security;

namespace MakeCMS.SkinTokens
{
    partial class MAKEUser : UserUserControlBase
    {
        #region Private Variables

        private string FirstName;
        private string LastName;

        #endregion

        #region Properties

        private string First_Name
        {
            get
            {
                if (FirstName == null)
                    return "";
                else
                    return FirstName;
            }
            set
            {
                FirstName = value;
            }
        }

        private string Last_Name
        {
            get
            {
                if (LastName == null)
                    return "";
                else
                    return LastName;
            }
            set
            {
                LastName = value;
            }
        }

        new protected bool AddUser
        {
            get { return true; }
        }

        #endregion

        public bool CreateAcct(string UName, string HashedId, string EmailAddress)
        {
            try
            {
                if (UName!= null & HashedId!= null & EmailAddress != null)
                {
                    var UserInfo = User;

                    CreateFLName(UName); //Own class that just pulls the first and last name from the username.

                    string objResponse = "Error: Unknown Error";


                    UserInfo oUserInfo = new UserInfo();
                    oUserInfo.PortalID = PortalSettings.PortalId;
                    oUserInfo.Membership.Username = UName;
                    oUserInfo.Username = UName;
                    oUserInfo.FirstName = First_Name;
                    oUserInfo.LastName = Last_Name;
                    oUserInfo.DisplayName = UName;
                    oUserInfo.Membership.Email = EmailAddress;
                    oUserInfo.Email = EmailAddress;
                    oUserInfo.Membership.Approved = true;
                    oUserInfo.AffiliateID = Int32.MinValue;
                    oUserInfo.Membership.Password = HashedId;

                    UserCreateStatus objUserCreateStatus = DotNetNuke.Entities.Users.UserController.CreateUser(ref oUserInfo);

                    if (objUserCreateStatus == UserCreateStatus.Success)
                    {
                        throw new Exception("Success");
                        //objResponse = "Success";
                    }
                    else
                    {
                        throw new Exception("Failure:" + String.format("Error: {0}", objUserCreateStatus.ToString()));
                        //objResponse = String.format("Error: {0}", objUserCreateStatus.ToString());
                    }
                    return false;
                }
                else
                    return false;
            }
            catch (Exception ex)
            {
                throw new Exception("Error creating account on "+DateTime.Now.ToShortTimeString()+": " + ex.ToString() + ".");
                return false;
            }
        }