Не получается установить WP-pagenavi

<?php
/**
* Custom template tags for this theme.
*
* Eventually, some of the functionality here could be replaced by core features
*
* @package tenderSpring
* @since tenderSpring 1.0
*/

if ( ! function_exists( 'tenderSpring_content_nav' ) ):
/**
* Display navigation to next/previous pages when applicable
*
* @since tenderSpring 1.0
*/
function tenderSpring_content_nav( $nav_id ) {
global $wp_query;

$nav_class = 'site-navigation paging-navigation';
if ( is_single() )
$nav_class = 'site-navigation post-navigation';

?>
<nav role="navigation" id="<?php echo $nav_id; ?>" class="<?php echo $nav_class; ?>">
<h1 class="assistive-text"><?php _e( 'Post navigation', 'tenderSpring' ); ?></h1>

<?php if ( is_single() ) : // navigation links for single posts ?>

<?php previous_post_link( '<div class="nav-previous">%link</div>', '<span class="meta-nav">' . _x( '&laquo;', 'Previous post link', 'tenderSpring' ) . '</span> %title' ); ?>
<?php next_post_link( '<div class="nav-next">%link</div>', '%title <span class="meta-nav">' . _x( '&raquo;', 'Next post link', 'tenderSpring' ) . '</span>' ); ?>

<?php elseif ( $wp_query->max_num_pages > 1 && ( is_home() || is_archive() || is_search() ) ) : // navigation links for home, archive, and search pages ?>

<?php if ( get_next_posts_link() ) : ?>
<div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">&laquo;</span> Older posts', 'tenderSpring' ) ); ?></div>
<?php endif; ?>

<?php if ( get_previous_posts_link() ) : ?>
<div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">&raquo;</span>', 'tenderSpring' ) ); ?></div>
<?php endif; ?>

<?php endif; ?>

</nav><!-- #<?php echo $nav_id; ?> -->
<?php
}
endif; // tenderSpring_content_nav

if ( ! function_exists( 'tenderSpring_comment' ) ) :
/**
* Template for comments and pingbacks.
*
* Used as a callback by wp_list_comments() for displaying the comments.
*
* @since tenderSpring 1.0
*/
function tenderSpring_comment( $comment, $args, $depth ) {
$GLOBALS['comment'] = $comment;
switch ( $comment->comment_type ) :
case 'pingback' :
case 'trackback' :
?>
<li class="post pingback">
<p><?php _e( 'Pingback:', 'tenderSpring' ); ?> <?php comment_author_link(); ?><?php edit_comment_link( __( '(Edit)', 'tenderSpring' ), ' ' ); ?></p>
<?php
break;
default :
?>
<li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
<article id="comment-<?php comment_ID(); ?>" class="comment">
<footer>
<div class="comment-author vcard">
<?php echo get_avatar( $comment, 40 ); ?>
<?php printf( __( '%s <span class="says">says:</span>', 'tenderSpring' ), sprintf( '<cite class="fn">%s</cite>', get_comment_author_link() ) ); ?>
</div><!-- .comment-author .vcard -->
<?php if ( $comment->comment_approved == '0' ) : ?>
<em><?php _e( 'Your comment is awaiting moderation.', 'tenderSpring' ); ?></em>
<br />
<?php endif; ?>

<div class="comment-meta commentmetadata">
<a href="<?php echo esc_url( get_comment_link( $comment->comment_ID ) ); ?>"><time pubdate datetime="<?php comment_time( 'c' ); ?>">
<?php
/* translators: 1: date, 2: time */
printf( __( '%1$s at %2$s', 'tenderSpring' ), get_comment_date(), get_comment_time() ); ?>
</time></a>
<?php edit_comment_link( __( '(Edit)', 'tenderSpring' ), ' ' );
?>
</div><!-- .comment-meta .commentmetadata -->
</footer>

<div class="comment-content"><?php comment_text(); ?></div>

<div class="reply">
<?php comment_reply_link( array_merge( $args, array( 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
</div><!-- .reply -->
</article><!-- #comment-## -->

<?php
break;
endswitch;
}
endif; // ends check for tenderSpring_comment()

if ( ! function_exists( 'tenderSpring_posted_on' ) ) :
/**
* Prints HTML with meta information for the current post-date/time and author.
*
* @since tenderSpring 1.0
*/
function tenderSpring_posted_on() {
printf( __( 'Posted on <a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s" pubdate>%4$s</time></a><span class="byline"> by <span class="author vcard"><a class="url fn n" href="%5$s" title="%6$s" rel="author">%7$s</a></span></span>', 'tenderSpring' ),
esc_url( get_permalink() ),
esc_attr( get_the_time() ),
esc_attr( get_the_date( 'c' ) ),
esc_html( get_the_date() ),
esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
esc_attr( sprintf( __( 'View all posts by %s', 'tenderSpring' ), get_the_author() ) ),
esc_html( get_the_author() )
);
}
endif;

/**
* Returns true if a blog has more than 1 category
*
* @since tenderSpring 1.0
*/
function tenderSpring_categorized_blog() {
if ( false === ( $all_the_cool_cats = get_transient( 'all_the_cool_cats' ) ) ) {
// Create an array of all the categories that are attached to posts
$all_the_cool_cats = get_categories( array(
'hide_empty' => 1,
) );

// Count the number of categories that are attached to the posts
$all_the_cool_cats = count( $all_the_cool_cats );

set_transient( 'all_the_cool_cats', $all_the_cool_cats );
}

if ( '1' != $all_the_cool_cats ) {
// This blog has more than 1 category so tenderSpring_categorized_blog should return true
return true;
} else {
// This blog has only 1 category so tenderSpring_categorized_blog should return false
return false;
}
}

/**
* Show home
*
* @since tenderSpring 1.0
*/
function tenderSpring_menu_args( $args ) {
$args['show_home'] = TRUE;
return $args;
}
add_filter( 'wp_page_menu_args', 'tenderSpring_menu_args' );

/**
* Flush out the transients used in tenderSpring_categorized_blog
*
* @since tenderSpring 1.0
*/
function tenderSpring_category_transient_flusher() {
// Like, beat it. Dig?
delete_transient( 'all_the_cool_cats' );
}
add_action( 'edit_category', 'tenderSpring_category_transient_flusher' );
add_action( 'save_post', 'tenderSpring_category_transient_flusher' );