[Solved] New MacOS Catalina breaks DisplayLink

[donpuethone]

Originally Posted by ChristianP

Here is the correct link to download the script that will guide you through solving the KEXT cache issue:

https://www.displaylink.com/downloads/file?d=262

In case the script is blocked by Gatekeeper (you should see a popup message saying "“dl_cache_fix_wizard.command” can’t be opened because it is from an unidentified developer."),
please open System Preferences->Security &Privacy->General tab and click on "Open anyway" button.

Tried the link. When I accepted terms and conditions this message came up:

"NoSuchKeyThe specified key does not exist.live/downloads/software/f1437_KEXT Cache Update Re-installer Script 0.1.zipFDAACA288A341DDFtD7i1V+nF+PFRnFlEqL+xEqTpD3 hAJ8q6CdxyXoAMRutUIH9stXaO9lVvX/FuZvWAbyFoSFRCAg="

Also: My problem is that the screen is black. As soon as I move my mouse to the screen I can see it. But everything else that I tried to move to the screen (e.g. a window) I can see nothing, except my mouse button. Tried everything that was described in this post, nothing worked for me so far...