emu48 hp48gx serial calculator connect vspe virtual serial posts emulator

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I use on a windows 10/64 emu48 with a hp 48gx.

I'd like to use the hp48g calculator connect software to talk to the emulator.
I use vspe - virtial serial ports emulator (latest version).

I get transmission errors.

Does anyone know why there are errors? What can I do?
Is there another method to connect them together?

Thanks for your reply