From GSpider-this worked for me!
GSpyder
Re: Apple TV 2G "An error occurred loading this content. Try again Later"
Dec 13, 2011 5:22 PM (in response to AlfredGZ)
The problem is occuring a lot to me as well. But there is a very simple fix!
Go to your ATV2 setting section. Go to General and then Network.
Go to Configure TCP/IP and select "Manually"
Leave IP Address as it is - scroll over and select "Done". Same with Subnet Mask and Router Address - those should be fine.
Next section is DNS Address: Change this (with the up and down arrow keys) to: 008.008.008.008 the press done, and then done again. You can test your settings, but you won't need to - just go and try netflix or itunes, or anything that was not working. This should cure the issue.
For those that want to know. The issue not an HDMI handshake, that would be fixed by turning on or off the TV and Apple TV device (or unplugging it).
The issue is a DNS problem, the 008.008.008.008 is Googles openDNS servers. Their are certain cable companies that their DNS is killing streaming (they don't know, nor understand how to fix it) - AKA if you are with Time Warner, this would be a problem for you in certain parts of the US (like the state I am in).
So by routing the services through another provider via your ATV2 you can by pass the DNS error causing the netflix issue (or more correctly the streaming issue). TimeWarner is tweaking some routers, so what worked yesterday with your old setting, may just stop or start working again. This solution should fix it and not depend on what your broadband provider is doing.
Hope that helps...