I've gone through all the steps of installing and activating the Multiple Site Manager for EE. It was all pretty straight forward. Everything appeared to work correctly, but when I click the "Edit Sites," button at the top I'm sent to just a plain white screen. No errors or anything. From what I can tell the URL is correct, it points to the page "manage_sites".
Wasn't sure if anyone had a similar issue like this when using Multiple Site Manager.