This error code belongs to the SlingPlayer software v1.5 and it is related to the Internet Viewing feature. The following link will provide you with the steps to follow in order to fix it up.
I am having the same problem described above. Can you please tell me where in the link you posted I need to go? Mine has already been registered and works for a bit, but I often end up getting this error. I unplug it, it will work for a while, then when I try to re-connect I get the same error.
Thanks for any help!