Open Sesame not launching

psychstudent · November 2017

Hi everyone,

I've tried everything to get open sesame to launch. Run as administrator, working though cmd.exe but nothing gets it to load. I get a working cursor that stops after a while.

I'm currently using Windows 10 so I'm not sure if that's a problem. If you need any more information let me know.

Any help would be greatly appreciated

sebastiaan · November 2017

Hi,

You might want to take a look at this discussion:

http://forum.cogsci.nl/index.php?p=/discussion/3453/help-opensesame-wont-load

If you have further questions, could you post them there?

Cheers!
Sebastiaan

psychstudent · November 2017

Hi Sebastian,

Thanks for the reply. I've followed the command prompt instructions but when I get to "python Scripts\opensesame-script.py" the command prompt says that 'python' is not recognised as an internal or external command, operable program or bath file.

But this might be my own problem as I've never really delved into command prompt.

Thanks,
Andy

psychstudent · November 2017

I've had more of a try and a consistent warning I get is

"WARNING:root: message signing is disabled"

and then python stops working without any error message being displayed in command prompt

sebastiaan · November 2017

and then python stops working without any error message being displayed in command prompt

But I guess that Windows does give you a message along the lines of "python.exe stopped working", right? In that case, the Python interpreter crashes for some reason, which will be difficult to find out.

However, what happens if you try the latest prerelease of 3.2 (http://osdoc.cogsci.nl/3.2/), or if you try the packages based on Python 3 (instead of Python 2, which is the default)?

parthsharma1996 · November 2017

Hi,
I'm facing the same problem, though the solution you suggested doesn't seem to work.
When 'python Scripts\opensesame-script.py ' I get the following error

qtpy.PythonQtError : No Qt bindings could be found

parthsharma1996 · November 2017

Here is a screenshot of the same.
Could you help me out with this?

sebastiaan · November 2017

Hmm, I have never seen this error before, and it's not very informative either. As a first try, I would reinstall OpenSesame, to see if your current installation has simply been corrupted for some reason. If that doesn't solve the issue, I would launch python.exe, which is in the OpenSesame program folder, and see what happens if you directly import PyQt4:

from PyQt4 import QtCore, QtGui

This shouldn't give any errors, but I suspect it will give errors for you. If so, please post these errors here.

Cheers!
Sebastiaan

mireiamarimon · June 2020

Hi,

I think I have the problem as the user before. I have tried your suggestions (the command prompt and reinstalling Open Sesame) but it still doesn't work. When I try the latest solution I get the error below:

Could you maybe help me on this?

Thank you in advance!

sebastiaan · June 2020

Hi @mireiamarimon ,

The information from this discussion is outdated. Currently OpenSesame uses PyQt5, not PyQt4. But I'm guessing you arrived here because OpenSesame doesn't launch. How have you installed OpenSesame, and what exactly happens when you launch OpenSesame?

Cheers,

Sebastiaan

mireiamarimon · June 2020

Hi Sebastiaan,

thank you for your answer. I have installed the most recent version of OpenSesame and nothing happens when I launch it...

Best,

Mireia

sebastiaan · June 2020

Hi @mireiamarimon ,

Let's start by getting to see the error message. The easiest way to do this is as follows:

Open opensesame.bat in a text editor, such as notepad (or Rapunzel, but it probably doesn't start either then!). If you have installed OpenSesame in the default location, this file is in c:\Program Files (x86)\OpenSesame.
Add pause to the end, as shown below
Save the file. (You may have to run the editor as administrator to be able to save the file.)
Double-click on opensesame.bat to start it.
A console will pop-up, and it will probably show an error message.

Copy-paste the error message here!

ECHO Please don't close this window. (Doing so will close OpenSesame.)
cd %~dp0
python.exe Lib\site-packages\opensesame.py %*
pause

Cheers!

Sebastiaan

mireiamarimon · June 2020

Hi Sebastiaan,

here is what pops up on the console.

Best,

Mireia

sebastiaan · June 2020

Ah, I see. PyQt5 is definitely included with OpenSesame. So if it's not found, as in your case, that is probably because a different program has set the paths (which specify where Python looks for things) on your system such that Python gets confused. And the primary suspect is PyCharm. Do you have PyCharm installed?

mireiamarimon · June 2020

I don't have PyCharm, but at some point I had installed Anaconda which I deinstalled normally and even deleted all the path that were set for it.

sebastiaan · June 2020

@mireiamarimon I'm 90% confident that it's a path issue, so let's go with that assumption first. There are several environment variables that are important here, but I don't know exactly which ones. If you go to the environment variables in the Windows configuration (it sounds like I don't need to explain to you what that means, but if so let me know), do you see any references to Python or Qt? If so, and if you remove those, does OpenSesame start?

mireiamarimon · June 2020

I have already checked that, but I can't find anything there. Here are the screenshots for you to have a closer look. But, as far as I can see, there is no Python or Qt path set.

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