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Ahn Jae Hyun, Park So Dam, Jung Il Woo, CNBLUE's Jungshin, A Pink's Na-Eun, and Choi Min sat in a neat row to deliver the message, "Along with Chuseok, a sweet holiday has come to us. Please eat a lot of delicious food with your family, and please love and support 'Cinderella and Four Knights'!" 

Unfortunately, it seems like one of the cast members made one or two blunders... who was it? 

Watch above to find out!