My problem is not that big!
I bought EFPS Pro, downloaded the Itch client, installed it, it works great!
I thought I'd use it on another computer and do everything the same way...
The only thing that doesn't want to install is the client :(
I know I have to keep up with the times, I just thought the client would run on 32bit systems.
I'll try to look for older versions... I'll see if I can.
Anyway, if you need, I can send you a screenshot of the error message when I install the client.