upgraded to 2, now error on comments_popup_link()

see it at https://whootah.com
Sorry to post so much, i just want to provide as much info as possible.

Fatal error: Call to undefined function: comments_popup_link() in /home/radialmo/public_html/whootah/wp-content/themes/whootah2/index.php on line 17

my line 17 is this:
<p class=”postmetadata”>Posted in <?php the_category(‘, ‘) ?> | <?php edit_post_link(‘Edit’, ”, ‘ | ‘); ?> <?php comments_popup_link(‘No Comments »’, ‘1 Comment »’, ‘% Comments »’); ?>

My theme is a mix between blix and kubrick.
if in my header.php file i add:
<?php comments_popup_script(); ?>

I get the error on my webpage:
Fatal error: Call to undefined function: comments_popup_script() in /home/radialmo/public_html/whootah/wp-content/themes/whootah2/header.php on line 25

it’s like no calls to comment functions are working at all. when i go to dashboard, the area for comments says:
Fatal error: Call to undefined function: get_comment_author_link() in /home/radialmo/public_html/whootah/wp-admin/index.php on line 52

line 52 says:
echo ‘

• ‘ . sprintf(__(‘%1$s on %2$s’), get_comment_author_link(), ‘comment_post_ID) . ‘#comment-‘ . $comment->comment_ID . ‘”>’ . get_the_title($comment->comment_post_ID) . ‘‘);