尝试以下操作：

//      CUSTOM POST TYPE 1
add_action(\'init\', \'ootb_tenant_register\');

    function ootb_tenant_register() {
        $labels = array(
            \'name\' => _x(\'Tenants\', \'post type general name\'),
            \'singular_name\' => _x(\'Tenant\', \'post type singular name\'),
            \'add_new\' => _x(\'Add Tenant\', \'tenant\'),
            \'add_new_item\' => __(\'Add New Tenant\'),
            \'edit_item\' => __(\'Edit Tenant\'),
            \'new_item\' => __(\'New Tenant\'),
            \'view_item\' => __(\'View Tenant\'),
            \'search_items\' => __(\'Search Tenants\'),
            \'not_found\' =>  __(\'No Tenants found\'),
            \'not_found_in_trash\' => __(\'No Tenants found in Trash\'), 
            \'parent_item_colon\' => \'\'
        );

        $args = array(
            \'label\' => __(\'Tenant\'),
            \'labels\' => $labels,
            \'public\' => true,
            \'show_ui\' => true,
            \'capability_type\' => \'post\',
            \'hierarchical\' => false,
            \'rewrite\' => true,
            \'supports\' => array(\'title\', \'editor\', \'thumbnail\')
        );

        register_post_type( \'tenant\' , $args );

        register_taxonomy("business", array("tenant"), array(
            "hierarchical" => true, 
            "label" => "Business Type", 
            "singular_label" => "Business", 
            "rewrite" => true)
        );
    }

add_action("add_meta_boxes", "ootb_admin_init");
add_action(\'save_post\', \'ootb_save_tenant_options\');

function ootb_admin_init(){
    add_meta_box("gallerymeta", "Tenant Directory Data", "ootb_tenant_meta_options", "tenant", "normal", "low");
}


function ootb_tenant_meta_options(){
    global $post;
    $custom = get_post_custom($post->ID);
    $location = $custom["location"][0];
    $shortdesc = $custom["shortdesc"][0];
    $website = $custom["website"][0];
    $email = $custom["email"][0];
    $twitter = $custom["twitter"][0];
    $facebook = $custom["facebook"][0];
    $smallpictureurl = $custom["smallpictureurl"][0];
    $contactname = $custom["contactname"][0];
    $landlinephone = $custom["landlinephone"][0];
    $mobilephone = $custom["mobilephone"][0];
    $largepictureurl = $custom["largepictureurl"][0];
    $picturealttag = $custom["picturealttag"][0];
?>

<div class="form-wrap">

    <div class="form-field">    
        <label for="location">Location :</label>
        <select name="location" style="width: 200px;">
            <option <?php if($location == "Please select...") echo "selected"; ?> value="Please select...">Please select...</option>
            <option <?php if($location == "Out of the Blue Drill Hall") echo "selected"; ?> value="Out of the Blue Drill Hall">Out of the Blue Drill Hall</option>
            <option <?php if($location == "Portobello Powerhouse") echo "selected"; ?> value="Portobello Powerhouse">Portobello Powerhouse</option>
        </select>
        <p>Location of Business</p>
    </div>

    <div class="form-field">
        <label for="shortdesc">Short Description :</label>
        <textarea name="shortdesc"><?php echo $shortdesc; ?></textarea>
        <p>Short description of the business which will appear on the directory homepage.</p>
    </div>

    <div class="form-field">
        <label for="website">Website Address :</label>
        <input name="website" value="<?php echo $website; ?>" />
        <p>Website address including http://www.</p>
    </div>

    <div class="form-field">
        <label for="email">E-mail Address :</label>
        <input name="email" value="<?php echo $email; ?>" />
        <p>Business contact address.</p>
    </div>

    <div class="form-field">
        <label for="twitter">Twitter URL :</label>
        <input name="twitter" value="<?php echo $twitter; ?>" />
        <p>Twitter URL including http://www.</p>
    </div>

    <div class="form-field">
        <label for="facebook">Facebook URL :</label>
        <input name="facebook" value="<?php echo $facebook; ?>" />
        <p>Facebook URL including http://www.</p>
    </div>

    <div class="form-field">
        <label for="smallpictureurl">Small Picture URL :</label>
        <input name="smallpictureurl" value="<?php echo $smallpictureurl; ?>" />
        <p>250 x 250 Picture URL</p>
    </div>

    <div class="form-field">
        <label for="largepictureurl">Large Picture URL :</label>
        <input name="largepictureurl" value="<?php echo $largepictureurl; ?>" />
        <p>500 x 500 Picture URL</p>
    </div>

    <div class="form-field">
        <label for="picturealttag">Picture Alt Tag :</label>
        <input name="picturealttag" value="<?php echo $picturealttag; ?>" />
        <p>Alt tag for both images.</p>
    </div>

    <div class="form-field">
        <label for="contactname">Business contact name :</label>
        <input name="contactname" value="<?php echo $contactname; ?>" />
        <p>Business contact name.</p>
    </div>

    <div class="form-field">
        <label for="landlinephone">Landline Telephone Number :</label>
        <input name="landlinephone" value="<?php echo $landlinephone; ?>" />
        <p>Landline telephone number.</p>
    </div>

    <div class="form-field">
        <label for="mobilephone">Mobile Telephone Number :</label>
        <input name="mobilephone" value="<?php echo $mobilephone; ?>" />
        <p>Mobile telephone number.</p>
    </div>

</div>

<?php

    // Use nonce for verification
    wp_nonce_field( plugin_basename( __FILE__ ), \'wpse28341\' );

}


function ootb_save_tenant_options( $post_id ) {
    global $post;   

    //skip auto save
    if ( defined( \'DOING_AUTOSAVE\' ) && DOING_AUTOSAVE ) {
        return $post_id;
    }

    // Use nonce for verification
    if ( !wp_verify_nonce( $_POST[\'wpse28341\'], plugin_basename( __FILE__ ) ) )
        return;

    //check for you post type only
    if( $post->post_type == "tenant" ) {
            if( isset($_POST[\'location\']) ) { update_post_meta( $post->ID, \'location\', $_POST[\'location\'] );}
            if( isset($_POST[\'shortdesc\']) ) { update_post_meta( $post->ID, \'shortdesc\', $_POST[\'shortdesc\'] );}
            if( isset($_POST[\'website\']) ) { update_post_meta( $post->ID, \'website\', $_POST[\'website\'] );}
            if( isset($_POST[\'email\']) ) { update_post_meta( $post->ID, \'email\', $_POST[\'email\'] );}
            if( isset($_POST[\'twitter\']) ) { update_post_meta( $post->ID, \'twitter\', $_POST[\'twitter\'] );}
            if( isset($_POST[\'facebook\']) ) { update_post_meta( $post->ID, \'facebook\', $_POST[\'facebook\'] );}
            if( isset($_POST[\'contactname\']) ) { update_post_meta( $post->ID, \'contactname\', $_POST[\'contactname\'] );}
            if( isset($_POST[\'smallpictureurl\']) ) { update_post_meta( $post->ID, \'smallpictureurl\', $_POST[\'smallpictureurl\'] );}
            if( isset($_POST[\'landlinephone\']) ) { update_post_meta( $post->ID, \'landlinephone\', $_POST[\'landlinephone\'] );}
            if( isset($_POST[\'mobilephone\']) ) { update_post_meta( $post->ID, \'mobilephone\', $_POST[\'mobilephone\'] );}
            if( isset($_POST[\'largepictureurl\']) ) { update_post_meta( $post->ID, \'largepictureurl\', $_POST[\'largepictureurl\'] );}
            if( isset($_POST[\'picturealttag\']) ) { update_post_meta( $post->ID, \'picturealttag\', $_POST[\'picturealttag\'] );}
    }
}