On my server the the test script (downloadable at http://xenforo.com/purchase) gave everything a pass but I was having issues getting the Facebook Integration test to work (was working on a different forum package but not XF). Found a post in the forums about CurlSSL & OpenSSL being required. I already had CurlSSL on the server but not OpenSSL. After installing OpenSSL the FB integration is working fine. Suggestion is to add a check for CurlSSL & OpenSSL to the test script so that at least an FYI type message is displayed mentioned that those would be needed if FB integration will be used on the server that the test script is running on.