Neighbors living on a Missouri cul-de-sac said they are baffled as to why all of their garage door openers stopped working at the same time. The residents of the five homes on Westhampton View Court in St. Charles said their garage door openers stopped operating December 26th and 27th, and they have been unable to identify any new causes of interference in the area to explain the issue. The neighbors said a technician from The Chamberlain Group, which makes Liftmaster openers, is scheduled to investigate the problem this week. All but one oft he residents said they use Liftmaster devices. The residents said the all filed complaints with the Federal Communications Commission, but it is unknown how long the agency will take to investigate.