Dale has a Slingbox, and ever since he updated his Slingbox app on his phone, it won't work unless he uses the HDMI cable. Slingbox says it's the HDCP copy protection of DirecTV. Leo says that this is most likely true. Leo recommends checking to make sure his HDMI cable is HDCP compliant. It sounds like DirecTV is turning on copy-protection to frustrate users of devices like the SlingBox.