Thread:Project:Support desk/File extension does not match MIME type when uploading Adobe Illustrator (.ai) files

Whenever trying to upload an .ai file to a mediawiki site I get the "File extension does not match MIME type" error. Extracts from files:

mime.types:

mime.info:

ai filetype is also included in $wgFileExtensions array in LocalSettings.php and mime.types and mime.info had .ai definitines included by default and haven't been modified,

Any ideas?

MediaWiki	1.16.0

PHP	5.3.3 (cgi-fcgi)

MySQL	5.1.49-community

IIS 7.0