Add Office Open XML as an acceptable file type :(

application/modules/courses/controllers/EditController.php

@@ -159,7 +159,7 @@ class Courses_EditController extends App_Controller_Action
 		        	
 			        $title = $_FILES['files']['name'][$fileType][$fileId];
 			        $fileExtension = array_pop(explode('.', $title));
-			        if (!in_array($fileExtension, array('rtf', 'pdf', 'odt', 'doc'))) {
+			        if (!in_array($fileExtension, array('rtf', 'pdf', 'odt', 'doc', 'docx'))) {
 			            continue;
 			        }
 			        $mimeType = $_FILES['files']['type'][$fileType][$fileId];

application/modules/courses/views/scripts/edit/index.phtml

@@ -1057,6 +1057,7 @@ if (in_array($this->request->getType(), array('NewCourseWithACE', 'AddACEToCours
             <li><a href="http://en.wikipedia.org/wiki/Portable_document_format" target="_new">Portable Document Format (.pdf)</a></li>
             <li><a href="http://en.wikipedia.org/wiki/Open_document_format" target="_new">OpenDocument Text (.odt)</a><li>
             <li><a href="http://en.wikipedia.org/wiki/DOC_(computing)" target="_new">MS Word Documents (.doc)</a></li>
+            <li><a href="http://en.wikipedia.org/wiki/Office_Open_XML" target="_new">Office Open XML (.doc)</a></li>
         </ul>
     </div>