wordpress form submission and the 404 error page

Question

I have the following form on a wordpress template page. I\'m getting a 404 error each time i submit the form but I\'m not using any of the reserved workpress parameter names

Answer 1

Type unique Name and ID try this form

                [one_half last="no"]
                Race Details

                RaceNumber

                Race'.$selectRaces.'

                [/one_half]
                [one_half last="yes"]
                Runner Details

                ID

                Firstname

                Surname

                Gender

                DOB

                Standard

                Company

                [/one_half]