Running WordPress 3.8. Updated the WPMU Dev Dashboard to version 3.4.1.
Once I updated, I was unable to access the WordPress Dashboard. Browser would time-out. The message from the Browser - "This page has a Redirect Loop"
After using FTP to delete the Plugin, I was able to get the WP Dashboard back.
I'll check for Plugin conflicts next and post a follow up.
Any suggestions in the meantime?