What version are you running? 126.96.36.199 and master What's the URL of the page containing the problem? N/A What steps will reproduce the problem? Unable to reproduce with a simple bzr branch. Working on that. However, debugging shows that fileid is None in bzr.py. Since bzr's fileid is created when the file is added and retained when renaming or moving files, the change proposed in http://reviews.reviewboard.org/r/1209/ is safe. What is the expected output? What do you see instead? Uploading a diff that contains changes to renamed files (all of them actually) fails with an SCMError exception. Uploading should work, since the file is present, just renamed. What operating system are you using? What browser? Irrelevant, happens all the time. Please provide any additional information below. http://reviews.reviewboard.org/r/1209/ contains the proposed patch for this (works for both master and release-188.8.131.52).