Thank you for contacting the Slingbox Answers Forum. I have attached an article that I hope will be helpful.
When I connect my set-top box to my TV with HDMI connections, I can't stream video at all using any version of SlingPlayer. Why?
Hope this helps,
Sling Moderation Team
Shawna, Thanks for your reply. Since my Slingbox is NOT set up using HDMI, the article you sent was not the full answer, but it put me on the path to the right answer.
My SB was already connected to the DVR with the component cable but the TV was still connected to the DVR with HDMI. I disconnected this and instead now have the TV fed from the SB component output cables and that has made the difference. It is kind of like the DVR senses the TV is off through the HDMI so doesn't broadcast even out through the component cables. With the HDMI cable no longer between TV and DVR, the DVR works beautifully with the SB.
Once again. thanks for helping with this.