Malibu Grand Prix missed a $1-million payment.

The Woodland Hills amusement park company said it missed the payment because of a demand by its principal lender that Malibu get additional approvals for its financial restructuring plan. The missed payment, due July 13, was the first installment on a $24-million debt to former creditors of Castle Entertainment, a bankrupt company merged with Malibu last year. Malibu said it has asked for an extension on the debt.