Board Thread:Support Requests - Getting Technical/@comment-26054694-20150915044726/@comment-1807002-20150915053528

Maybe since it is a new member problem only - edit the welcome message (which is automatically sent to all members who preform at least 1 edit) on your wiki adding a reminder to name images or linking to a page that properly explains how to add, name, undo and update images for the wiki. MediaWiki:Welcome-message-wall-user