Board Thread:Support Requests - Getting Started/@comment-25139182-20141002150357/@comment-5558012-20141006135612

Staff moved all promotion files a while back. You need to reupload the file and any other files you uploaded via Special:Promote. Once you do so the file name will be, File:Wikia-Visualization-Main,wikiname.png with "wikiname" the text that appears before "wikia" in the URL. Then you can delete the old file.