# PsychoPy won't start (ver 1.84.2)

**URL:** <https://discourse.psychopy.org/t/psychopy-wont-start-ver-1-84-2/4600>\
**Category:** Other\
**Created:** [May 30, 2018, 10:13am UTC](https://discourse.psychopy.org/t/psychopy-wont-start-ver-1-84-2/4600 "2018-05-30T10:13:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Koen\_Rummens](https://avatars.discourse-cdn.com/v4/letter/k/e47c2d/32.png) [@Koen\_Rummens](https://discourse.psychopy.org/u/Koen_Rummens)\
**Post date:** [May 30, 2018, 10:13am UTC](https://discourse.psychopy.org/t/psychopy-wont-start-ver-1-84-2/4600/1 "2018-05-30T10:13:46Z")

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Hi there,

I hope this is not a previously asked question, but I did not find an answer in previous posts on this.

We run psychopy on our lab computer, and overnight it decided not to start up again.  
When clicking the Psychopy icon, Psychopy is not mentionned in Task Manager.  
We use PsychoPy 1.84.2 and Python2.7.  
After re-installing the same PsychoPy version, the problem persists.

This is the error we get:

> Traceback (most recent call last):  
> File  
> “C:/Users/admin/Desktop/experiments/grid\_stim\_Olivia/drawing\_expt.py”,  
> line 1, in   
> import psychopy  
> File  
> “C:\PsychoPy2\lib\site-packages\psychopy-1.84.2-py2.7.egg\psychopy\__init_\_.py”,  
> line 42, in   
> from psychopy.preferences import prefs  
> File  
> “C:\PsychoPy2\lib\site-packages\psychopy-1.84.2-py2.7.egg\psychopy\preferences\__init_\_.py”,  
> line 8, in   
> from . import preferences as prefsLib  
> File  
> “C:\PsychoPy2\lib\site-packages\psychopy-1.84.2-py2.7.egg\psychopy\preferences\preferences.py”,  
> line 232, in   
> prefs = Preferences()  
> File  
> “C:\PsychoPy2\lib\site-packages\psychopy-1.84.2-py2.7.egg\psychopy\preferences\preferences.py”,  
> line 43, in **init**  
> self.loadAll()  
> File  
> “C:\PsychoPy2\lib\site-packages\psychopy-1.84.2-py2.7.egg\psychopy\preferences\preferences.py”,  
> line 136, in loadAll  
> self.appDataCfg = self.loadAppData()  
> File  
> “C:\PsychoPy2\lib\site-packages\psychopy-1.84.2-py2.7.egg\psychopy\preferences\preferences.py”,  
> line 189, in loadAppData  
> encoding=‘UTF8’, configspec=appDataSpec)  
> File “C:\PsychoPy2\lib\site-packages\configobj.py”, line 1229, in  
> **init**  
> self.\_load(infile, configspec)  
> File “C:\PsychoPy2\lib\site-packages\configobj.py”, line 1318, in \_load  
> raise error  
> configobj.ParseError: Invalid line (u’ “”') (matched as neither section  
> nor keyword) at line 135.

Any idea what is going wrong here?

Thank you a lot.

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<div class="post-metadata">

**Author:** ![dvbridges](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/dvbridges/32/1918_2.png) [@dvbridges](https://discourse.psychopy.org/u/dvbridges)\
**Post date:** [May 30, 2018, 12:12pm UTC](https://discourse.psychopy.org/t/psychopy-wont-start-ver-1-84-2/4600/2 "2018-05-30T12:12:31Z")

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Hi @Koen_Rummens, there seems to be some problem loading your appData, and perhaps they need to be reset. Follow these guidelines to delete your prefs and start again. Note, your file location may be different to the one in the link. In Windows 10, my files are found at `C:\Users\MY_USERNAME_\AppData\Roaming` and the “AppData” directory was actually hidden, so needs you may need to set your folder options in Windows to show hidden files.

[http://www.psychopy.org/troubleshooting.html#cleaning-preferences-and-app-data](http://www.psychopy.org/troubleshooting.html#cleaning-preferences-and-app-data)

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<div class="post-metadata">

**Author:** ![Koen\_Rummens](https://avatars.discourse-cdn.com/v4/letter/k/e47c2d/32.png) [@Koen\_Rummens](https://discourse.psychopy.org/u/Koen_Rummens)\
**Post date:** [May 30, 2018, 12:34pm UTC](https://discourse.psychopy.org/t/psychopy-wont-start-ver-1-84-2/4600/3 "2018-05-30T12:34:53Z")

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thank you, @dvbridges. that solved the problem.