So a while back I got an HDMI cable to use to connect my Directv HD receiver to my Sony Bravia tv. When I bought the cable, I hooked it up from the receiver to one of the inputs on my tv, switched to that input and no problem, crystal clear picture. Well the other night a friend asked if I could bring my HDMI cable over to his place to use to watch baseball from his computer feed on his HDTV. I was going over there to hang out anyway so I thought sure why not. So I went over there and did that. When I came back and tried to hook it up to my tv/reciever again, I did the exact same thing I had done originally and had not changed any settings on my tv or receiver, but got an "Invalid Format" on the screen. I tried every HDMI cable input on my tv, tried changing settings on my tv, tried changing settings on my directv, and nothing will get this invalid format to go away. Anyone have any ideas? I would appreciate it.