ATOM error: Either the id, title, or updated attribute is missing. UI needs a better error message

I too am encountering this.

Actually I just read the README.txt rtfm to myself...

Atom renderes a view using the Atom syndication schema. You can use this
format to create an Atom syndication of the content in your view. Atom
requires the following fields to be present (fields in bracket indicate
what the plugin will fall back to if it can find the explicitly named
Atom field):
id (nid), title(node_title) updated(last_updated, Updated date, changed,
Last updated/commented, Last comment time)
The following fields are recommended: content(Body, node_body,
node_revisions_body), link (nid {a link will be constructed from the
Drupal path and the nid), summary author(uid).

Haven't tried it but I assume it is going to work....

Encountered this bug as well... a UI message explaining that you need 3 fields to be named id, title & updated in the view would be helpful.

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I have all these fields (in Views 3) and this message still comes.

could have sworn i had this working last night after getting the message and then got rid of it by adding NID field (i don't recall even renaming labels).

but today i have all three fields and relabeled and still getting msg.

nope, my bad.. just the old updating one display and forgot it updates all displays... this works fine.

Looks like this is no longer an issue. Closing.