[Plugin: Page Links To] I keep getting the warning "page to link not active" when using Pi

I keep getting this when I click the picture perfect admin on the appearance tab in my dashboard.

Message received each time:
“Theme Note
Warning: The page-link-to plugin is NOT active.
This theme works best with the page-links-to plugin installed. You can install and activate it from the plugin’s page. Find out more about this plugin from this page.”

I have the plugin in question (Version 2.6 | By Mark Jaquith )
“Page Links To
Network Deactivate | Edit”

I have a sub directory Network, with domain mapping, imergeandsee is a sub directory, main directory is mymergemedia.com

I have latest Word Press 3.3.1
I edit on a Chrome browser. My site is http://www.imergeandsee.com
I need to edit the link image menu on the left.

I think something may be up in the ‘php’ for the functions page that handles the admin menu see below.
Could it be the repeated “me” in “sdthememenu”?

‘
// Let’s add the options page.
add_action (‘admin_menu’, ‘sdthememenu’);

function sdthememenu() {
add_submenu_page(‘themes.php’, ‘Picture Perfect’, ‘Picture Perfect’, 5, ‘sd-submenu’, ‘menu’);
}

function menu() {
load_plugin_textdomain(‘sdoptions’);
//this begins the admin page
?>

<div class=”wrap”>

<h2><?php _e(‘Theme Note’); ?></h2>

<h2><?php
$plugins = get_option(‘active_plugins’);
$required_plugin = ‘http://mymergemedia.com/wp-content/plugins/page-links-to/page-links-to.php&#8217;;
if ( !in_array( $required_plugin , $plugins ) ) _e(‘Warning: The page-link-to plugin is NOT active.’);

?> </h2>

</div>

<div class=”wrap”>
<p style=”text-align: center;”>This theme works best with the page-links-to plugin installed. You can install and activate it from the plugin’s page. Find out more about this plugin from this page.</p>
</div>

<?php } // this ends the admin page ?>’

What am I missing