Summary: Bought the unit on from 6th Ave.Electonics on 6/27/08. Received our Panasonic DMP-BD50K 7/3/08. Followed installation instructions per manual. When to Walmart and bought two Blu-ray movies. Loaded the first Blu-ray movie, Error message on screen " this operation is disabled". Loaded the second movie, the same message. Checked the disc for problems, they seem OK. Loaded DVD movies and got the same message. Reveiwed the setup menus instructions again.