regen_system_assets_config.php

<?php
error_reporting(E_ALL);
$SYSTEM_ROOT = '';
// from cmd line
if ((php_sapi_name() == 'cli')) {
    if (isset($_SERVER['argv'][1])) $SYSTEM_ROOT = $_SERVER['argv'][1];
    $err_msg = "ERROR: You need to supply the path to the System Root as the first argument\n";

} else {
    if (isset($_GET['SYSTEM_ROOT'])) $SYSTEM_ROOT = $_GET['SYSTEM_ROOT'];
    $err_msg = '
    <div style="background-color: red; color: white; font-weight: bold;">
        You need to supply the path to the System Root as a query string variable called SYSTEM_ROOT
    </div>
    ';
}
if (empty($SYSTEM_ROOT)) {
    echo $err_msg;
    exit();
}

if (!is_dir($SYSTEM_ROOT) || !is_readable($SYSTEM_ROOT.'/core/include/init.inc')) {
    echo "ERROR: Path provided doesn't point to a Matrix installation's System Root. Please provide correct path and try again.\n";
    exit();
}

require_once $SYSTEM_ROOT.'/core/include/init.inc';

// re-generate the System Config to make sure that we get any new defines that may have been issued
require_once SQ_INCLUDE_PATH.'/system_asset_config.inc';
$GLOBALS['SQ_SYSTEM']->setRunLevel(SQ_RUN_LEVEL_FORCED);
    $sys_asset_cfg = new System_Asset_Config();
    $sys_asset_cfg->save(Array(), true);
$GLOBALS['SQ_SYSTEM']->restoreRunLevel(SQ_RUN_LEVEL_FORCED);

?>