Error in updating user profile in SharePoint 2003

Problem: Error Object references not set to an instance of an object with upm.CreateUserProfile(userID) and “Error in updating user profile” userProfile.Commit().

Resolution: Use custom webservice in SharePoint to run code for updating user profile information. Look MSDN article which explains about implementing custom webservice in SharePoint.

Writing Custom Web Services for SharePoint Products and Technologies

http://msdn2.microsoft.com/en-us/library/ms916810.aspx