What version are you running? 1.6 alpha 0 (dev) at http://reviews.reviewboard.org/ What's the URL of the page containing the problem? http://reviews.reviewboard.org/api/review-requests/2124/ What steps will reproduce the problem? 1. Retrieve API results from http://reviews.reviewboard.org/api/review-requests/2124/ . The diffs link is http://reviews.reviewboard.org/api/review-requests/2124/diffs/ 2. Retrieve API results from http://reviews.reviewboard.org/api/review-requests/2124/diffs/ What is the expected output? What do you see instead? I expect the diffs to be loaded. Instead, the result is an API error : 100 - Object does not exist.