I have a setup just like the blocks set up here: Blocks of trials and counterbalancing — PsychoPy v2021.1 However, it kept saying “Error when loading resource, cannot read property ‘0’ of undefined” for the second xlsx so I tried it with one row, reading the same excel twice and it came up with the…

OOPS! Sorry about that. I actually just solved my problem. Silly error, I was thinking the arrays were resetting themselves where the code routine was located, not realizing it was in the “begin experiment” tab and therefore not part of the second loop through. Moving the array code from the earlier…

Would the resource be a video file? [image] Video stimuli not resetting to beginning in online experiment Online experiments Couldn’t you do something like the following…? Begin Routine moviestarted=0 Each Frame if t > .5 and moviestarted == 0: moviestarted = t …

No, it’s just an excel file, the stimuli in the excel are just text

Are you using .pop()? Please could you upload the minimal version or share a run link for the experiment?

Yes, I’m using .pop(). It’s creating an array, randomizing the excel rows and feeding that to the array and pushing one of the rows via .pop(). Then on a second block, I’m trying to feed to a second excel into the arrays to do the same thing over again with new stims. I’ll get it shared momentarily…

@wakecarter Here’s the public minimal version. Thanks for your time looking into this. If you run it, to advance the fixation cross, press space. [image] AMA Lab / PM_Mini Minimum version for troubleshooting loop

I can’t run it without making my own copy because it’s piloting. I create several PM tasks every year. I preload my targets and fillers into separate arrays and then interleave them in the trials loop. However, I’ve only recently started using .pop(). I’ll make a dataless public copy of one of th…

I’ve just updated my demo list with PM Time (featuring event and time based PM tasks). [image] PsychoPy Online Demos Blog If you have routines or experiments that are likely to be useful to others, please create a post in this thread, editing your post to add new demos so…

Property '0' of undefined on second load of same resource

Online experiments

wakecarter April 27, 2021, 9:46pm 2

Would the resource be a video file?

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Property '0' of undefined on second load of same resource

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