Jon and Kate Gosselin gave their oh-so bitter divorce brawl a break on Thursday in order to celebrate the birthdays of their twin daughters. Only, it didn't go off without a hitch. Jon brought a cake that had Mady's name misspelled. It had and extra "d."

A store manager told PEOPLE that the cake was ordered FOR the ex-'Jon and Kate Plus 8' star by an unnamed entertainment TV show and that the woman caller spelled out the name wrong. At the store, Jon brought along the cameras and complained about his wife. "She's dividing the family up," he said.