James Huff on "Can't add media"

That could be a variety of things, so we have to be very methodical about troubleshooting it.

Try deactivating all plugins. If that resolves the issue, reactivate each one individually until you find the cause.

If that does not resolve the issue, try switching to the Twenty Sixteen theme to rule-out a theme-specific issue (theme functions can interfere like plugins).

If none of those work, please make sure that your browser is up to date by visiting https://whatbrowser.org/

If it is not, please try updating your browser or switching to a different browser.

If it is, please do these two things:

1. Try clearing your browser's cache and cookies.

2. Try with all browser extensions or add-ons temporarily disabled.

Please let us know how each step goes for you, and which browser (and version of) you're using if you're still having trouble.