Display my custom post type

I have searched a solution for several days. I really need help now! I have tried to make a custom post type. I can see the post type in the panel and I can write a post BUT I can’t see the post when I click “show post”. The post isn’t there. It just shows the 404 not found page. I can see regular posts but not my custom post type. What is wrong?? I got the code from wordpress codex example.

I wrote this in my functions file:

add_action( 'init', 'create_post_type' );
function create_post_type() {
	register_post_type( 'acme_product',
		array(
			'labels' => array(
				'name' => __( 'Products' ),
				'singular_name' => __( 'Product' )
			),
		'public' => true,
		'has_archive' => true,
		)
	);
}

Thanks in advance!