If you run the following (very short) experiment:
ISI.psyexp (20.1 KB)
with the following (very small) File:
ISI.xlsx (21.8 KB)
An error pops up in the end. This error is unrelated to the Excel File, but disappears if I take out the Excel file from the conditions and set a fix ISI duration (which is what I don’t want). Can somebody explain me what’s causing the error?