At what point does it fail - is it the 'Getting Slingboxes...' stage or when it actually tries to connect to the Slingbox? What is the last message you see before it gives the network error, and what does the error message exactly say?
I (and others) have had an issue getting my slingbox directory:
Ovcoylleris the same problem you're having. Code 3 and sometimes I can connect to the directory but than can't stream. Also tried the link of flash on the browser and get the same error.
This flash application is destroying the concept of connected devices with WDTV.
I'll continue posting on your thread since I see that sling is answering you.Thanks