The Chicago Tribune and Fox News are reporting that the Art Institute of Chicago has filed a lawsuit against London-based engineering practice, Ove Arup & Partners over “delays and shoddy engineering at its Modern Wing” , which opened last year. The lawsuit filed Tuesday in federal court, cites $10m in repairs and upgrades to the addition.

Among the problems alleged in the suit were cracks in the concrete floors, condensation clouding the main vestibule glass and an air-conditioning system that couldn’t maintain proper climate control for the artwork. The delays alleged in the suit are over the design of the ‘Flying Carpet’, the metal blades of which caused a whistling sound, required a redesign. The suit said Arup failed to offer any settlement after the Art Institute submitted a list of defects and expenses.