Gallery captions missing after update

Re: https://kriesi.at/support/topic/how-to-add-captions-to-gallery-thumbs/

I updated the theme, a little late to the party.. made the same mods to gallery.php but the captions will not appear

I tried, in gallery.php

						$thumbs .= " <a href='".$link[0]."' data-rel='gallery-".self::$gallery."' data-prev-img='".$prev[0]."' {$class} data-onclick='{$counter}' title='".$description."' ><img {$tooltip} src='".$img[0]."' title='".$title."' alt='".$alt."' /><span class='visible-caption'>{$caption}</span></a>";

This used to work, now doesn’t – I have reverted back to 1.91 for now.. but any help very much appreciated.