EM wrote from fgsschol to say she couldn't authenticate, though she had been able to do so previously. The .htaccess file controlling access did not have that netlink in the whitelist, so I added it. In testing, I noticed that if the pdfs folder contains on PDF Files, the user sees an error statement because my code does not trap for that condition. I'll fix that. I also noticed that they included two folders each containing 10 pdf files (rather than 2 omnibus PDF files) and my code does not handle that either. Wrote to her explaining situation and describing possible ways forward.