Tonight's performance of Ice Age Live was supposed to be the first for a four day run in Nottingham.
Capital FM Arena said the show ran smoothly in Cardiff, they said they will refund/exchange tickets for tonight's show.
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It's a day of great excitement for many - but disappointment for tens of thousands who don't get the place they were after.
One has straight ginger hair, a fair complexion and blue eyes. The other has darker skin and her eyes are brown.
The singer says he is proud to be able to show his children the streets in his home town that have been named after his songs.