Everyday it is something new with zen cart, getting old fast

I have the following code in my /includes/templates/MY_TEMPLATE/common/tpl_main_page.php

PHP Code:
  if (in_array($current_page_base,explode(",",'create_account,conditions,privacy,shippinginfo,legal_notices,contact_us,return_policy,return_authorization_form')) ) {
    $flag_disable_right = true;
  } 
Been working fine until this morning, the only changes I made today was in my stylesheet.css file

Anyone know why this would happen?