Sorry to hear you're having trouble with your SlingPlayers. Welcome to the Sling Community!
There could be a few reasons for this issue, including low wifi signal on your local network or on the network you are accessing to view remotely.
Here is an article from our support page describing/explaining the error codes on Watch.Slingbox.com.
Additionally, here is an article with some Slingbox settings you can try.
Hope this helps resolve your issue!
The Sling Moderation Team