"Outside Cloister" is not simply a new texture for "Saint-Paul's Cloister", it's a new model created to be added in the "Saint-Paul's Cloister" library and allow you to render the cathedral and the cloister2 from outside.
"Outside Cloister" is designed to be used only with the cathedral!
Saint-Paul's Cloister link : http://www.renderosity.com/mod/bcs/index.php?ViewProduct=86189