Thanks Mike for the additional information. I did test that I can make an album 'unlisted' and retrieve it when authenticated. When not properly authenticated, I cannot retrieve that album.

There are a couple things to try here: 1) If you retrieve the list of your albums, is the album which is causing a 404 included? 2) I don't believe an invalid auth token should cause a 404 error, but an auth token for a different user could. Please validate that you're not authenticating as another user. 3) A packet capture of some of this data would be very helpful. If that's not possible, can you provide a snippet of code you're running? This problem appears to only be occurring for you at this time, as we haven't received any other reports. 4) If you have the ability to run a curl command to retrieve a feed, that would be helpful as well. I have 2 shell scripts which you can use to test and make sure everything is working right (requires a unix/ linux/os x machine, or cygwin)

Hopefully this additional information should get us closer to solving this problem!

Cheers, -Ryan

On Aug 8, 5:50 pm, Mike Oliphant <olip...@nostatic.org> wrote: