RSS Feed does not validate using Views RSS module Drupal version: 7.14

Views RSS version: 7.x-2.0-rc3

I am trying to validate an RSS feed in feedburner for a drupal blog. When I try to validate de xml file at feedvalidator.org I get this error

line 3, column 0: XML parsing error: &lt;unknown&gt;:3:0: XML or text declaration not at start of entity

The xml file is well written (I compared it against another one which validated) and the error I found is that that xml file generated by Views RSS puts three blank lines at the beginning and therefore I think the file does not validate.



I've looked for answers in the oficial Views RSS module issue track but unsuccessfully. I've also created many feed views using Views RSS module, but all of them provide the same error at feedvalidator.org.

I'd like to correct this through the source code of the module, but I do not know where to start or which file I should edit to correct that mistake, just if only through code I could solve this validation.
In some cases this error will be caused by space in one of your modules. Best way to find the issue is to edit module.inc file in includes folder and add this after the drupal_load function in the module_load_all function:

print $module.'|';


you will probably get a huge list but one that starts on line 3 will be the issue.