Thank you for reaching out to us on the forum, I am sorry to hear that you are having trouble being able to watch your slingbox. The error code W200 usually means that the slingbox is havivng trouble being able to connect to the network in a remote location or even in the home location. I found this article on our support website that explains it in much more detail and has some troubleshooting steps you can try. I will post the link below for you.
Hope this helps,
The Sling Moderation Team