Hollywood Casino, just days after it opened in Maryland Heights, was forced to shut its casino floor for two hours, St. Louis Public Radio reports.

According to the report, gaming regulators in Missouri ordered the former Harrah’s casino to temporarily close its doors today because of a glitch in its computer systems.

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Missouri Gaming Commission executive director Roger Stottlemyre says slot machines at the casino, which now operates as a Hollywood Casino following its purchase last week by Penn National Gaming, began having problems communicating with Penn National systems early this morning. The problem, he says, got steadily worse throughout the day.

In May, Harrah's was sold to Penn National Gaming, Inc. for $610 million. The Heights casino is the 14th Hollywood Casino and 29th gaming or racing facility for Penn National—other locations include theArgosy Alton casino, Hollywood Casinos in Joliet, IL; Baton Rouge, LA; and The M Resort Spa Casino in Las Vegas.

Penn National is pumping $61 million into the rebranding over the next six to nine months, which will include new slot machines and themes, and a new Boogie Nights nightclub in the previous Voodoo Lounge space.

Tony Carlucci, the Maryland Heights' Hollywood Casino general manager, also expects upgrades in the casino's hotel rooms and restaurants.