UI issues for failed uploads
|Reported by:||trepmal||Owned by:||azaozz|
When uploading a file with a forbidden extension using the multi-file uploader, the upload will (of course) fail. But the "crunching" bar remains visible, and if the Gallery tab is visible, the attachment count is wrongly incremented.
Will also happen if there are directory permission issues ('cannot write to directory', 'uploaded file could not be moved').
Screencast showing gallery tab incrementing: http://screencast.com/t/EJtWF2kXXBki
Although the correct error messages are sent from async-upload.php, the js (wp-includes/js/plupload/handlers.js) looks for a particular string to check if the response is an error, and this string is not present.
Patch adds the string as an easy fix.