It looks like you're running into a form of copyright protection known as High-bandwidth Digital Content Protection (HDCP). For additional information on HDCP, you can check out our Support Article below:
- 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?
But to answer your question, you simply need to eliminate the HDMI connections and connect your Slingbox, TV, and Tivo in the "Component Passthrough" method. Here is another Support Article with instructions and an illustration on how to do this:
Hope this clears things up!
Sling Media Forum Moderation Team