What version are you running?
2.0.20

What's the URL of the page containing the problem?
https://dtd-review.pr.sc.hpecorp.net/r/3509/
What steps will reproduce the problem?

open up the review
Look at the differences between revision 3 and revision 4






What is the expected output? What do you see instead?
What I see:

 There was an error displaying this diff.
Internal error. Unable to locate file record for filediff 72431
This may be a bug in the software, a temporary outage, or an issue with the format of your diff.
Please try again, and if you still have trouble, contact support.
What operating system are you using? What browser?
Windows 7 and chrome

Please provide any additional information below.