Empty firsl line in all documents of MODX Revo

Hello, guys
Today i tried to create the sitemap.xml file via GoogleSiteMap snippet.
Snippet works good, generates the xml information, but whole xml document doesnt work, coz all code start from second line and show error.
I checked all documents and find that all them starts useful code from second line, but first is empty.

How i could solve the problem of empty first line and up code?

Thanks for future

[[!GoogleSiteMap]]

Ace
Archivist
FormIt	
Breadcrumbs
getPage
GoogleSiteMap
getResources
SimpleSearch
Notify404
tagLister

If you manually edited your config file, make sure it does not have any extra spaces or BOM characters before the opening or after the closing php tag.

<?php
/**
 *  MODX Configuration file
 */
....
if (!defined('MODX_CACHE_DISABLED')) {
    $modx_cache_disabled= false;
    define('MODX_CACHE_DISABLED', $modx_cache_disabled);
}