Last modified: 2010-05-15 15:42:44 UTC
In includes/SpecialUpload.php, function curlCopy, when the user is not allowed to upload by URL, it throws a PHP error because $wgOut is not declared as a global variable at the start of the function. To fix, simply add $wgOut to the list of global variables at the start of the function.
This was fixed in r17880.