Update: Fianna Fáil TD aware of another Leaving Cert adding mistake that was corrected 'almost immediately'

There are calls for third-level institutions to extend their course registration cut-off dates.

Update - 12.16pm: Fianna Fáil's Education Spokesperson, Thomas Byrne, has revealed that he knows of a second Leaving Cert adding error from this year's exams.

Mr Byrne told Today with Sean O'Rourke show on RTE Radio 1 this morning that the mistake was discovered at the start of September.