Cool idea. I guess it works on MD5 checksums ? (No details are provided). or checking versions in .xml files ? It is a super cool feature for addon authors to be able to do File Health Checks too. I certainly think this very useful and practical tool is an example of Xenforo looking out for webmasters wanting a great forum which is easy administrate. I certainly think this feature needs an entry in: Have you Seen ? Great work Xenforo ! http://xenforo.com/community/forums/have-you-seen/ Reading the forums over the past year, I have been surprised to hear/read that "incomplete file uploads" have been determined to be the cause of many hard to diagnose forum problems. Glad to hear this problem will be significantly minimized.