Media tags still works with old content, however the fields to apply tags no longer shows up with any media content. When going to the Roles Management page, we receive the following warning.
Warning: Invalid argument supplied for foreach() in wp-content/plugins/media-tags/mediatags_settings.php on line 367
I looked into this further and believe the Roles coding needs to be updated. I do not think line 362 of that file is still applicable with 3.7.
Note, we are not using multisite.
Please let me know your thoughts.