Blank page after reloading

[eluser]Linkark07[/eluser]
Ok, I removed base_url() from form open and moved part of the code of buscarcurso to confirm_inscr. Now, the form post the data to confirm_inscr instead of buscarcurso.

But still, the same problems persists. F5, Firefox brings a confirmation window saying it must send information that will repeat any action. After pressing resend, the blank page appears.