Changelog 2017-09-04
[NEW] The Control Panel Cache Manager will now purge files in the /tmp directory, and orphaned file entries in the database older than 2 hours.
[FIX] The Attachment Manager will now purge orphaned file entries in the database older than 2 hours.

https://www.ubbdev.com/forums/ubbth...ds-7-6-1-progress-report-2017-09-04.html