Good morning Vincent,

I downloaded DF20 and installed it. OK
I downloaded the Plato Release version . Installed it (Run Administrator) and got the following message.

Click image for larger version. 

Name:	Plato.png 
Views:	87 
Size:	143.1 KB 
ID:	14384
A previous version of plato was installed.
MSSQL2019express is installed (standard install)

Windows 10 Pro