I was working with Mary Cooch and originally thought this might be related to having installed the Flickr repository since after enabling the Flickr plugin and going to browse a course's files (including site files) I receive:

Coding error detected, it must be fixed by a programmer: Url parameters can not have numeric keys!

Coding error detected, it must be fixed by a programmer: Unrecognied URL scheme. Please check the formatting of the URL passed to this function. Absolute URLs are the preferred scheme.

I did a var_dump($params) which yielded:

array(5)

{ [0]=> string(12) "contextid=14" [1]=> string(23) "filearea=course_content" [2]=> string(8) "itemid=0" [3]=> string(12) "filepath=%2F" [4]=> string(9) "filename=" }

var_dump($key) produces:

int(0)

I am not sure if it is in the call to moodle_url in /files/index.php around line 49:

redirect(new moodle_url('index.php', array('contextid' => $context->id, 'itemid'=> 0, 'filearea' => 'course_content')));

I am not sure what is happening but something is getting passed incorrectly such that $params is seeing the index as an int.

Peace - Anthony