Oh great, it worked!

Thanks for the fast fix.

Edit: there is only one weird thing: in the Dutch version (didn't try the English version) the right menu is the only one if the selection
"Toon portaal op beide kanten: Ja Nee" is ja (Show portal on both sides = yes)

I have upgraded my phpBB from 3.0.14 => 3.1.10 => 3.2.0, and installed Board3 for the first time.

The first time I tried to install there was an error with an non existing database: database_portal_modules
I created this database with a copy from an other test forum after witch the installation ...