wp_network_shared_media

I'm sorry to have to inform you that this plugin is unsupported and therefore deprecated. It was build just before the new javascript Mediabrowser was introduced and rebuilding this plugin to support this is a complete overhaul. There are some alternatives available, See links below. Thanks for using this plugin!

mw-oauth2-client-extension

MediaWiki OAuth2 Client Extension

CakePHP-TranslateEnhancements

CakePHP v2 plugin enhancing the Translate Behavior

wp_export-media-with-content

Include all relevant attachments in your WordPress export