Cannot add post type more than four

Please help…

I created custom post types before using code in functions.php without having any problems using the latest version of wordpress to my projects. I can create any number of post types before. But now, using the same code to another project, only four post types are showing on dashboard.

This is my code:

<?php
add_action( 'init', 'create_post_type' );

function create_post_type() {

	register_post_type( 'Profile',
		array(
			'labels' => array(
			'name' => __( 'Profile' ),
			'singular_name' => __( 'Profile' )
		  ),
		  'public' => true,
		  'hierarchical' => true,
		  'rewrite' => array('slug' => 'profile'),
		  'supports' => array('title', 'page-attributes', 'editor'),
		  'menu_position' => 20,
		  'description' => 'profile'
		)
  );

	register_post_type( 'The Core Team',
		array(
			'labels' => array(
			'name' => __( 'The Core Team' ),
			'singular_name' => __( 'The Core Team' )
		  ),
		  'public' => true,
		  'hierarchical' => true,
		  'rewrite' => array('slug' => 'the-core-team'),
		  'supports' => array('title', 'page-attributes', 'editor'),
		  'menu_position' => 20,
		  'description' => 'the-core-team'
		)
  );

	register_post_type( 'Services',
		array(
			'labels' => array(
			'name' => __( 'Services' ),
			'singular_name' => __( 'Services' )
		  ),
		  'public' => true,
		  'hierarchical' => true,
		  'rewrite' => array('slug' => 'services'),
		  'supports' => array('title', 'page-attributes', 'editor'),
		  'menu_position' => 20,
		  'description' => 'services'
		)
  ); 

	register_post_type( 'Works',
		array(
			'labels' => array(
			'name' => __( 'Works' ),
			'singular_name' => __( 'Works' )
		  ),
		  'public' => true,
		  'hierarchical' => true,
		  'rewrite' => array('slug' => 'works'),
		  'supports' => array('title', 'page-attributes', 'editor', 'thumbnail'),
		  'menu_position' => 20,
		  'description' => 'works'
		)
  ); 

	register_post_type( 'Clients',
		array(
			'labels' => array(
			'name' => __( 'Clients' ),
			'singular_name' => __( 'Clients' )
		  ),
		  'public' => true,
		  'hierarchical' => true,
		  'rewrite' => array('slug' => 'clients'),
		  'supports' => array('title', 'page-attributes', 'editor', 'thumbnail'),
		  'menu_position' => 20,
		  'description' => 'clients'
		)
  ); 

}

?>

“Clients” post type is not showing in dashboard.

Hope you can help me.. Thanks!