Triggers are not sent to parallel port - Windows 11 problem?

Dear community,

In our EEG lab, we have a stimulus presentation computer with E-prime which is connected to an EEG recording computer with Curry 9 (Compumedics Neuroscan) via a parallel port integrated in a SynAmps RT (Model 9032, Compumedics Neuroscan) System Unit. This system works well.

We recently tried to use Psychopy 2024.2.4 (under Windows 11) for stimulus presentation, but we were unable to receive triggers sent by Psychopy to Curry 9. The port address is correct, all the Psychopy drivers (“inpoutx64.dll” and “inpoutx64.lib”) are in the same folder as the Psychopy experiment and in System32 (as explained here https://psychopy.org/hardware/parallelPortInstr.html), and we do not receive any error messages when running the Psychopy experiment. However, the triggers from Psychopy are still not appearing, even though they are shown when running the same setup with E-Prime instead of Psychopy.

Does anyone have experience with Psychopy on Windows 11 and experienced similar issues sending triggers to Curry 9?

We are a bit clueless how to fix or further troubleshoot.

Thankful for any hints and suggestions!

best,
Linn

Update: our issue was solved by following Stanley’s recommendations. :slight_smile: Parallel Port Issues w/ Windows 11 - #17 by jon

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