Welcome to the forum!
I've been looking online at the components that you have. The Pioneer is definitely HDCP compliant, as is the Vizio. The Sony's manual, although it doesn't actually say "HDCP", implies that it is. I'm still trying to nail down if the Directv receiver is, but I'll be really surprised if it isn't.
I saw a review on Amazon about your blu-ray player from someone that kept getting a black screen and no sound when trying to play a DVD, so maybe (just maybe) it's a bad unit.
When you connect the HDMI outputs on the Directv reciever and blu-ray player to the Pioneer, which inputs do you use? I'm just wondering if all of the audio/video assignments have been set up correctly on the receiver (although that would not give you the "HDCP Error" message). From your descriptions, I'd say that they have been...but I want to double check.