Its been bugging me for a couple of weeks that certain clients were not able to upload certian file types. I blamed my Hosts, Herat, they said ti wasn’t them, my theme, bad code… but it turns out it is WordPress itself.
“This issue affects more than just Word documents as initially reported. This ticket can be used to track http://laparkan.com/buy-tadalafil/ related issues with all non-image files failing to load after 4.7.1 with an error message of Sorry, this file type is not permitted for security reasons.”
“Uploading files fails for certain extensions, including .docx, .pptx, .mp3. Trac ticket #39550 For now, use the Disable Real MIME Check plugin and remove it as soon as 4.7.3 is released.”