When I try to install the script, I get to 42% of db table installation and it stops:

Create settings.inc file
Create database tables
Create default shop and languages
Populate database tables
An error occurred during installation...
You can use the links on the left column to go back to the previous steps, or restart the installation process by clicking here.

I am used to work with Prestashop and have several installations of both 1.6.1.x and 1.7.5 without any problems.

So why can't I install this?