The ONLY place fopen is used is in Mark's Links code and that is just used to check the validity/accessibility of a link.
I am using includes in the Library code... The weird thing is from the Pals menu I am just calling articlesLibrary.php, which is exactly what I am calling from the primary threads menu. I get the failure and generation of 10.1.1.6 from the Pals menu, but not the threads menu...