Pagination won't appear/work for wp_list_comments query

For some background, I added a nav-item to the buddypress menu that shows that person’s most recent comments, but I can’t get pagination links to show up. My code:

global $bp;
$author_id = $bp->displayed_user->id;
$args = array(
	'user_id' => $author_id,
	'orderby' => $order_by,
	'order' => $order_dir,);
?>
			<div id="CommentListWrapper">
				<ol class="comment-list">
					<?php
// show individual comments	

wp_list_comments('callback=mytheme_comment&type=comment', get_comments($args)); ?>
</ol>

<div class="comms-navigation">
<div style="float:left"><?php previous_comments_link(); ?></div>
<div style="float:right"><?php next_comments_link(); ?></div>
</div>
			</div><!-- #COMMENT LIST WRAPPER -->

with mytheme_comment function:

function mytheme_comment($comment, $args, $depth) {
		global $themePath;
		$GLOBALS['comment'] = $comment;
		$comm_title = get_the_title($comment->comment_post_ID);
	$feat_img = wp_get_attachment_url( get_post_thumbnail_id($comment->comment_post_ID) ); ?>

		<li <?php comment_class(); ?> id="li-comment-<?php comment_ID() ?>">
			<article id="comment-<?php comment_ID(); ?>">

				<div class="comment-text the-comment-container item-container">
					<div class="the-comment-content">

						<header class="comment-header">
							<img src="<?php echo $feat_img?>" length="50" height="50" class="avatar">
							<div class="comment-meta commentmetadata">
								<?php comment_reply_link(array_merge( $args, array('reply_text' => __('Reply',THEME_NAME), 'depth' => $depth, 'max_depth' => $args['max_depth']))) ?>    <?php edit_comment_link(__('Edit',THEME_NAME),' ','') ?>
							</div>
							<h4 class="poster-name"><cite><a href="<?php  echo get_permalink($comment->comment_post_ID); ?>" rel="external nofollow" title="<?php  echo $comm_title; ?>"> <?php   echo $comm_title; ?> </a></cite></h4>
							<div class="comment-header-info clearfix">
								<span class="date"><?php comment_date(); ?></span>
							</div>
						</header>

						<div class="comment-content">
							 <?php echo wp_html_excerpt( get_comment_text(), 500 ); ?>
      <?php if (strlen(get_comment_text()) > 500	) : ?>
	  ...<p><a href="<?php  echo get_permalink($comment->comment_post_ID); ?>" rel="external nofollow" title="<?php  echo $comm_title; ?>">Read more</a></p>
<?php endif; ?>
						</div>

						<footer class="comment-footer">
							<?php if ($comment->comment_approved == '0') : ?>
								<span class="awaiting_moderation"><?php _e('Your review is awaiting moderation.', THEME_NAME) ?></span><br />
							<?php endif; ?>
						</footer>

					</div>
				</div>
			</article>
		<?php
	}

I’ve enabled comment pagination in the Discussion admin options, have tried setting the per_page for wp_list_comments and have tried using paginate_comments_links( ) instead of using the individual next and previous functions, but no matter what I do the pagination links will not appear. I can see different pages of comments by setting the “page” option in wp_list_comments, so I know they exist. The links for pagination just won’t show. Any help would be greatly appreciated.