What version are you running? 1.1 alpha 2 (dev) What's the URL of the page containing the problem? [DomainName]/api/json/reviewrequests/[ReviewRequestId]/diff/new/ What steps will reproduce the problem? 1. post-review something that contains an empty diff as the last diff file. E.g. __init__.py 2. The bug is caused in overloaded SVNDiffParser.parse_special_header function What is the expected output? What do you see instead? No exception and diff uploaded What operating system are you using? What browser? KUbuntu, Firefox Please provide any additional information below. I have a fix for this bug for all subclasses of DiffParser which overload parse_special_header() and I'll post it to your reviewboard in due course.