I have the same problem, and I tried using the same code you did - using ProfileController.UpdateUserProfile, but still can't get the profile to update.   Can anyone see what I'm doing wrong here? 

                'Create the saleman DNN UserInfo object and hydrate it
                Dim slsmanUserInfo As New UserInfo

                'Populate the salesman DotNetNuke UserInfo object and save it
                With slsmanUserInfo
                    .DisplayName = Name.Text
                    .Email = Email.Text
                    .FirstName = Split(Name.Text, " ")(0)
                    .LastName = Split(Name.Text, " ")(1)
                    .PortalID = PortalId
                    .Username = UserID.Text
                    .Membership.Password = Password.Text
                End With

                'Create the salesman, update the salesmanID and add the user to the Dealer role
                Dim UserSatus As Integer = UserController.CreateUser(slsmanUserInfo)
               

                'Add the SalesmanID
                slsmanUserInfo.Profile.SetProfileProperty("SalesmanID", salesman.SalesmanID)
                'Update the slsman User
                ProfileController.UpdateUserProfile(slsmanUserInfo)

I've been scouting around and I can't seem to find a solution to a simlar issue. 

I am working on building and automated user import.   My problem is that if a user already exist then I need to update the user.  Is there a function I can call that will update the users information if they are already defined in the User Table???

The code I am using is:

Public Shared Function CreateUser(ByRef NewUser As DotNetNuke.Entities.Users.UserInfo, ByVal PortalID As Integer) As DotNetNuke.Security.Membership.UserCreateStatus' Add New User to Portal User Database

 

 

 

 

 

objUserInfo = UserController.GetUserByName(PortalID, NewUser.Username,

 

 

Dim objSecurity As New DotNetNuke.Security.PortalSecurityDim objModules As New ModuleControllerDim UserController As DotNetNuke.Entities.Users.UserControllerDim objUserInfo As DotNetNuke.Entities.Users.UserInfoDim objNewUser As New DotNetNuke.Entities.Users.UserInfoFalse)Dim userCreateStatus As DotNetNuke.Security.Membership.UserCreateStatus = DotNetNuke.Security.Membership.UserCreateStatus.AddUser'if a user is found with that username, error.

 

'this prevents you from adding a username

 

'with the same name as a superuser.

 

If Not objUserInfo Is Nothing Then

 

'username already exists in DB so update the user and show user an error
CreateUser = DotNetNuke.Security.Membership.UserCreateStatus.UsernameAlreadyExists
Exit Function

 

End If

objNewUser.PortalID = NewUser.PortalID
objNewUser.FirstName = NewUser.Profile.FirstName
objNewUser.LastName = NewUser.Profile.LastName
objNewUser.Email = NewUser.Email
objNewUser.Username = NewUser.Username
objNewUser.Membership.Password = NewUser.Membership.Password
objNewUser.Membership.Approved = NewUser.Membership.Approved
objNewUser.AffiliateID = DotNetNuke.Common.Utilities.Null.NullInteger
objNewUser.Membership.Approved = NewUser.Membership.Approved
objNewUser.AffiliateID = DotNetNuke.Common.Utilities.Null.NullInteger

 

 

 

'initialize the profile
objNewUser.Profile.InitialiseProfile(NewUser.PortalID)
objNewUser.Profile.SetProfileProperty("Unit", NewUser.Profile.Unit)
objNewUser.Profile.SetProfileProperty("Street", NewUser.Profile.Street)
objNewUser.Profile.SetProfileProperty("City", NewUser.Profile.City)
objNewUser.Profile.SetProfileProperty("Region", NewUser.Profile.Region)
objNewUser.Profile.SetProfileProperty("PostalCode", NewUser.Profile.PostalCode)
objNewUser.Profile.SetProfileProperty("Country", NewUser.Profile.Country)
objNewUser.Profile.Telephone = NewUser.Profile.Telephone
objNewUser.Profile.SetProfileProperty("Cell", NewUser.Profile.Cell)
objNewUser.Profile.SetProfileProperty("Fax", NewUser.Profile.Fax)
objNewUser.Profile.SetProfileProperty("IM", NewUser.Profile.IM)
objNewUser.Profile.Website = NewUser.Profile.Website
objNewUser.Profile.PreferredLocale = NewUser.Profile.PreferredLocale'Return create status
CreateUser = UserController.CreateUser(objNewUser)End Function