CD index link to .html in subfolder
I have a CD with a PDF file that serves as Index. This file links to several PDF files in subfolders -> these work fine on Windows as well as MacOS with Acrobat DC/Reader. There is a link (Open File: cdname:Subfoldername:filename.html) to a .html file in a subfolder that does not open correctly anymore on mac -> safari shows only some text elements and file:///.file/id=[number] as path/empty page in firefox. It works fine on Windows and has been working in the past (CD published in 2014) for both platforms. Any ideas?
Thanks