Grill Blew up (by 2 users)

Last night I woke to the smell of gas, and went down to check the grill. Two of the dials had blown off and melted. The gas leak was clearly from the gill. I opened the cabinet and shut down the gas and realized the regulator hose was melted so badly that it was no longer connected to the grill and the cabinet door was singed. We typically always turn the tank off, but to forget this particular evening. This is of great concern, as the outcome could have been worse regarding safety, as well as the gill is totaled and it's only a year old. Has anyone else had these issues?