Reader v20 Hyperlinks Security Hyperlink warning check box NOT remembering "Remember this Action "

Using a LibreOffice I created an .odt with hyperlinks to files to be located on an SD card.

I need the user an easy way to jump to supporting video, photo and PDFs located on that drive.  

I have exported the .odt as a PDF.   The only files that do not throw up the security warnings are the PDFs. Video and photos  get the pop ups:

Reader DC v20 throws up the security warning and then annoyingly an other pop up after you click allow.

Why doesnt the check box work?

I can live with one pop up but not two.  I have  tried going to preferences and selecting Trust Manager  >change settings button> select  "allow pdfs to access all website"

I can click on the same link immediately after, withotu closing anythig and the same pop up occurs.

I understand that the Fille/// hyperlink  may be the reason for the prompts but do not think I can change it in Reader.  

How can we get the check box to work so they only get the warning ONE time?