If I delete a file off a drive attached to my dockstar from a computer connected to my LAN and "Use full security sessions" is not checked, I'll get an "Error: This file could not be removed." pop-up error with a spinning circle and a "cancel" link.  If I click "cancel" and refresh, the file is deleted so I don't know why the error is occurring.

The non-beta Web UI works when deleting so it's only a beta web UI issue.