PL4 install fail on Win

I have PL3 installed, giving PL4 a try after purchasing. The installation starts ok, then it comes up with an error window with no chance to continue. Please see attached.
Not very encouraging for a new purchase.

Hello @MrMFT,

It looks like there is something with the installer. Please, redownload it and try again.

Thank you
Svetlana G.