Hi all. Since comicpress underwent a complete redo from the old versions in version 4.0 (it is now based on Easel), I figure some of you may be stuck wondering how to get the update tag in.
In comicpress 4.0, I added just two lines of code to content-comic.php:
$thewebcomiclist_crawler = "<!-- Last Update: ".get_the_date('d/m/Y')." -->";
Put this somewhere in the <div class="post-text"> div. It should be as simple as that.