Installation of older Matlabversion does not work while R2020b is installed, why?

Hello,

I have installed R2020b, and want to install an older version, because a toolbox (Ledalab) does not work with it.

When I try to install R2019b or older, it looks like the installation is done, but only a few folder are installed (appdata, bin, etc, sys, uninstall).

Does anyone have an idea, what I could do?

Best, Martin.

[Rik]

Do you have anything to suggest why this would be related to the already installed version?

Answer 1

[Martin Krippl]

During installation one has to install the network licence manager, although it is already installed. At some point (one of several trials of installation) I was told to do something with it. I do not remember anymore what exactly (delete, change directory of its installation etc..).