Yep you need to modify the function to pass $title
maybe in pp-inc.php
function get_imagethumb( $bigimage, $thecat, $theuser, $approved, $nocache=0, $avatar=0, $thumbw=0, $thumbh=0
, $title ) {
then in pp-inc.php display_gallery function
$pimgtag[$count] = get_imagethumb( $features['bigimage'], $features['cat'], $features['userid'], 1
, 0, 0, 0, 0, $features['title'] );