[mattstyle2]

is 793 this line:
$dirs[] = array_merge($file, $this->dirstats($filename));

if so go up to the top of the function and set $adv=false; so it doesn't execute the 'this->' statement..

up at 755 is the function declaration

function checkout_listfiles_nr($dir, $dirs_only=false, $adv=false){ 
	$adv=false;
	$dirs = $files = array();

-- see what I did there? put the $adv=false; statement under the function declaration.

let me know if that helps.

regards,

Matt