WordPress Admin Menu & Plugin page Missing - php

Question

I have created a plugin and have done so many times but for some reason I can not seem to get a navigation to the plugin settings page on the admin menu.
The following code I have used is:
// create custom plugin settings menu
add_action('admin_menu', 'uubba_categories_addmenus');
function uubba_categories_addmenus() {
//create new top-level menu
add_menu_page('Check My Stats', 'CMS Page', 'manage_options', 'uubbacmspage', 'uubba_cms_players_page', '', 6);
}
I have also created a settings page but for some reason that is not echo'ing anything what so ever either. The code is as follows:
function uubba_cms_players_page(){
global $wpdb;
//get the players information needed
$getinfo = $wpdb->get_results("SELECT username FROM uubba_userstats");
$output = '<style>';
$output .= '.uubbahr{margin:25px 0px;}';
$output .= '.uubba-button-green,.uubba-button-green:visited{padding:8px 14px;background-color:#8FE485;color:white;}';
$output .= '.uubba-button-green:hover{background-color:#79DC6E;color:white;}';
$output .= '.uubba-button-red,.uubba-button-red:visited{padding:8px 14px;background-color:#F56A6A;color:white;}';
$output .= '.uubba-button-red:hover{background-color:#E34747;color:white;}';
$output .= '<style>';
$output .= '<div class="wrap">';
$output .= '<h1>Check My Stats Players</h1>';
$output .= '<hr class="uubbahr">';
$output .= '<table>';
$output .= '<tr>';
$output .= '<th scope="col"><h5 class="font12">Users Name</h5></th>';
$output .= '<th scope="col"><h5 class="font12">Actions</h5></th>';
$output .= '</tr>';
foreach($getinfo as $gi){
$output .= '<tr>';
$output .= '<td><h3>'.$gi->username.'</h3></td>';
$output .= '<td>View Statistics Delete User</td>';
$output .= '</tr>';
}
$output .= '</table>';
$output .= '</div>';
echo $output;
}
I have no idea why this would not work, I have used this method a lot in the past and for some reason it just does not work on this plugin.
If anyone could shed some light on it, I would be most appreciated indeed :)