KCFinder cannot upload an image, displays "Unknown Error"

When using the KCFinder button to upload an image from my laptop, I get an "Unknown Error" messsage and the image fails to upload. ( I can use images that have been uploaded from another method, such as FTP.) This issue occurs in both CKFinder and TinyMCE that both ship with CiviCRM.

The solution is to change code in the file "packages/kcfinder/core/uploader.php"

Around line 125, remove the following section of code:
// LINKING UPLOADED FILE
if (count($_FILES))
$this->file = &$_FILES[key($_FILES)];

Replace that code with the following new code:
// LINKING UPLOADED FILE
if (count($_FILES)) {
foreach($_FILES as $key => $value)

{ if($key) $this->file = &$_FILES[key($_FILES)]; }

}