Hey MotorCityJim, That's a great question! There are a few different things that this could be. First, you may want to try restarting your Slingbox and SlingCatcher. I believe this article may help you fix your problem. Watch on Slingbox.com plays audio but no video. Another great article is Unable to connect to the Slingbox due to a network error
I hope this information is helpful! Let us know how it goes.
Sling Media Forum Moderation Team