Can't Upload .docx Or .rtf Files

Hi,

I'm trying to upload the some .docx and rtf files. But I can't get Yii to accept the mimeTypes. It works for .doc and text though. Not sure what is wrong, wonderd if anyone else could help. I'm using XAMPP if that helps too.

Model:

array('file', 'file', 'on' => 'insert', 'safe'=>true, 'maxSize'=> 512000, 'maxFiles'=> 1, 
			'mimeTypes' => 'application/msword, application/vnd.openxmlformats-officedocument.wordprocessingml.document, application/rtf, text/plain',
			'tooLarge'=> 'File cannot be larger than 500KB.',
			'wrongMimeType'=> 'Format must be:<code>.doc</code>  <code>.docx</code> <code>.txt</code> <code>.rtf</code>'),

I also added:

'docx'=>'application/vnd.openxmlformats-officedocument.wordprocessingml.document', 

to the mimeTypes.php file.

Also added

application/vnd.openxmlformats-officedocument.wordprocessingml.document docx

into the apache/conf/mime.types

Any advice would be appreciated

Jonny