Displaying the version number

I am trying to install a plugin (suma) that requires the version number of wordpress displayed as a meta tag on each page.

For some reason mine does not do that. I have checked and I have not obfuscated it i.e. functions.php is clean.

Is there an easy way to get the version number back in the meta tag?

functions.php:

<?php
if ( function_exists('register_sidebar') )
    register_sidebar(array(
        'before_widget' => '<li id="%1$s" class="widget %2$s">',
        'after_widget' => '</li>',
        'before_title' => '<h2 class="sidebartitle">',
        'after_title' => '</h2>',
    ));
function new_excerpt_length($length) {
	return 150;
}
add_filter('excerpt_length', 'new_excerpt_length');
?>