# Can't launch Psychopy study on Pavlovia

**URL:** <https://discourse.psychopy.org/t/cant-launch-psychopy-study-on-pavlovia/34038>\
**Category:** Online experiments\
**Tags:** pavlovia\
**Created:** [March 24, 2023, 11:43pm UTC](https://discourse.psychopy.org/t/cant-launch-psychopy-study-on-pavlovia/34038 "2023-03-24T23:43:48Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Cinty\_CW](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/cinty_cw/32/37518_2.png) [@Cinty\_CW](https://discourse.psychopy.org/u/Cinty_CW)\
**Post date:** [March 24, 2023, 11:43pm UTC](https://discourse.psychopy.org/t/cant-launch-psychopy-study-on-pavlovia/34038/1 "2023-03-24T23:43:48Z")

</div>

URL of experiment: [Foreign Characters Recognition Task [PsychoPy] (pavlovia.org)](https://run.pavlovia.org/CintyCW/iconic_memory_foreign_characters_recog_task2223/index.html/)

Description of the problem: I can run the experiment on Psychopy just fine, but it won’t open when I launch it on Pavlovia, it’s just stuck there in blank. I can’t pilot it either.

I use Windows 10 and Psychopy Builder (v2022.2.5).

Also, when I upload the experiment, it appears as UNKNOWN in the Software Platform category. Please help, I am desperate!!

Thank you!

---

<div class="post-metadata">

**Author:** ![wakecarter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/wakecarter/32/5753_2.png) [@wakecarter](https://discourse.psychopy.org/u/wakecarter)\
**Post date:** [March 25, 2023, 9:53pm UTC](https://discourse.psychopy.org/t/cant-launch-psychopy-study-on-pavlovia/34038/2 "2023-03-25T21:53:05Z")

</div>

> [@PsychoPy Experiment returns a blank screen when uploaded to Pavlovia](https://discourse.psychopy.org/t/psychopy-experiment-returns-a-blank-screen-when-uploaded-to-pavlovia/33667/6):
>
> Hello, the condition file for the loop is called stimulus.xlsx but the error message refers to a file stimulus list.xlsx. Any ideas why there is this discrepancies? There is a folder called index.html. This should actually be a file and not a folder. So do you mind posting a screen shot of Experiment properties - Online? What happens if you delete the folder index.html and resync. Is the folder index.html recreated or is there now a file called index.html? Best wishes Jens

> [@Blank Screen when trying to run a (crazy simple) experiment online](https://discourse.psychopy.org/t/blank-screen-when-trying-to-run-a-crazy-simple-experiment-online/32136/2):
>
> Hello KatrinR you have a folder called index.html in your repository. Delete this folder and try syncing again. Pavlovia expects an index.html and two .js-files (experimentname-legacy-browers.js, experimentname.js) in the root-folder of the experiment. Did you specify an Output path in the online tab of the Experiment properties? If so, leave this line blank. As long as Pavlovia does not know the software platform and the platform version, your experiment won’t run online. Best wishes Jens

---

<div class="post-metadata">

**Author:** ![Cinty\_CW](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/cinty_cw/32/37518_2.png) [@Cinty\_CW](https://discourse.psychopy.org/u/Cinty_CW)\
**Post date:** [April 4, 2023, 2:48am UTC](https://discourse.psychopy.org/t/cant-launch-psychopy-study-on-pavlovia/34038/3 "2023-04-04T02:48:19Z")

</div>

Hi @wakecarter! Sorry for the late reply. Thank you for your help and it works perfectly fine now! The followings are some of things I did wrong as a newbie:

1. I did not export HTML
2. The Index file was saved as a folder
3. There were irrelevant files in the folder I uploaded to Pavlovia that had nothing to do with the current project

Lastly, I also got into a loop of desperation where I upload the experiment from Psychopy to Pavlovia in the Pilot status, and the experiment will appear to be UNKNOWN. I had to change status from Pilot to Inactive, and then to Pilot again for the platform and its version to be recognized.

Thank you again!!!