function insert_page() error

I have a plug-in and I want it to create a page when activated, i have created a function (see below) that uses wp_insert_post.

However I get an error whenever i use it.

Warning: in_array() [function.in-array]: Wrong datatype for second argument in /home/clubsdot/public_html/wp-includes/post.php on line 1284

Fatal error: Call to a member function on a non-object in /home/clubsdot/public_html/wp-includes/link-template.php on line 152

If I change post_type to post it creates a new post perfectly, however it I use post_type “page” I get the error.

Douse anyone know what is be causing this problem?

The Function

function cdc_insert_page($title, $content, $status = 'publish', $parent = '0', $order = '0') {
global $wpdb;

//test if page already exists
$post_name_check = $wpdb->get_var($wpdb->prepare("SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND post_parent = %d LIMIT 1", $title, 'page', $parent));

  if(!$post_name_check){
    //create page
    $postid = wp_insert_post(array(
		'post_title' 	          => $title,
  		'post_content'  	  => $content,
  		'post_status' 	          => $status,
  		'post_author'             => 1,
                'post_parent'             => $parent,
                'menu_order'              => $order,
                'post_type'               => 'page',
  		'comment_status'          => false
    ));

    return $postid;
  }else{
    return 0;
  }
}