Hello, I'm so sorry for bothering you again.
It turns out I installed PinballX on Win 10 and Win 11, and in Win 10, PinballX won't open. I installed it exactly as it says in the manual.
What could it be? In Win 10, I installed Em .NET Framework 3.5, and in Win 11, it launched without a problem on the first try.
Greetings, everyone