The Digital-Digest installer here:
https://imgburn.com/index.php?act=download
After running, it says it created a PHP file to run to "Install ImgBurn" (is that not what an "Installer" is supposed to do???).
If you click the Install Now button at the bottom, it only opens the PHP file, and displays the code from it, because of course, you need a PHP server to run PHP code, and what self-respecting denizen of freeware DOESN'T have a PHP server running in the background 24/7?
Even if I rename the file to .HTM, it just opens a slightly "broken" Digital Digest webpage with no installer or download that I could see (see pic 2).
I think you need to have a talk with your benefactor, and ensure that they are using a more viable "installer". You know, like one that actually INSTALLS something?