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OpenSesame Portable



  • edited 8:06AM

    Hi Martin,

    Just a note regarding the configuration error. It appears that this is the same problem as has been reported previously for the official OpenSesame packages:

    What appears to do the trick is updating the .net framework on Windows XP, as described in the post above.


  • edited 8:06AM

    Hi Sebastiaan and Edwin,

    Just wanted to let you know that the Open Sesame Portable page says "for instructions, please refer to the documentation page (link)" but the documentation page is not found.


  • edited 8:06AM

    Thanks, guys, for all of the suggestions and notifications about bugs and link rot. The (long overdue...) new version is now online!

    download OpenSesame 2.8.3 Portable

  • edited 8:06AM

    Dear All,

    I am a new user of OpenSesame. I am trying to design an eyetracking experiment. Our eyetracker is eye-link II. I have downloaded this winPython version (2.8.3) from because it is not very convenient to install new software in our machine. I read from OpenSesame website that extra packages for setting up eye-link trackers are already packed up in this portable version

    However, for some reason, I did not find pyGaze or pyLink plug-ins in this version. So I copied pygaze from another portable version (0.27.1). After that, I can see those eyetracking icons in OpenSesame. However, I still cannot open the example sesame file "schreij_owens_theeuwes_2008_eyelink". The error information is "No module name eyelink_calibrate". I wonder whether I still need to install the extra packages into this winPython version as specified here (, or schreij_owens_theeuwes_2008_eyelink" example file is outdated.

    Finally,I wonder whether it is possible that I can find a recent sample openSesame experiment filethat uses eye-link. That would be very helpful for beginners. (Probably there are, and I just did not find them:).

    Thank you so much for your time and help.


  • edited 8:06AM

    Hi Zliu,

    Thanks for pointing out the broken link. If your main interest is to use the EyeLink, there is no (longer any) need to download the special WinPython package. You can simply download the latest version of OpenSesame, open the PyGaze template, and select the EyeLink in the pygaze_init plug-in. This will immediately give you a working--though useless--EyeLink experiment.

    Does that clear things up?


  • edited 8:06AM

    Hi Sebastiaan,

    Thank you very much for your help.

    As I mentioned, I am a new user of OpenSesame, and, if you don't mind, I hope I can get more advice here. Previously I used E-prime to do behavioral and neuroimaging studies. But now I'd like to add eyetracking. So in my institute there are behavioral testing rooms, neuroimaging rooms (fMRI, eeg/meg), and eyetracking rooms. In most, if not all, cases, it is difficult to install software by individual users, which requires admin right. So I am thinking, if portable version OpenSesame does not need to be installed, this may solve the big problem: I can program experiments using this portable version of Opensesame and run the experiments in any of the testing rooms. This workflow should work well even if I need to work in another institute. However, if I understand correctly, to install the main OpenSesame package, i.e., the *.exe file that you suggested, I still need the admin password, which can be a problem here in my place.

    With this background information, do you think the best solution is to use winPython package? Or you have other suggestions?

    If I use winpython package 2.8.3, do I need to install extra packages to make it work with eye-link II machine? (as I mentioned, I did not find pyGaze and pylink in that version.) Or has the new 2.9 winPython version (I cannot download yet) already packed up everything?

    Thank you very much again.

  • edited 8:06AM

    Hi Zliu,

    I understand the confusion. There are two types of portable packages.

    • One is labeled 'no installation required'. This is exactly the same software as the .exe installer, except that you don't need to install anything--just unzip and go. So that's probably what you want.
    • The other is labeled 'WinPython-based package'. This is built using WinPython, a portable Python environment, and is technically a bit different from the official packages. It's mostly useful if you want a full Python environment along with OpenSesame.

    Does that clear things up?


  • edited 8:06AM

    Hi Sebastiann,

    This helps a lot! Thank you very much. One final question before I make the choice between the two packages:

    On the page of portable package, you've mentioned that
    "It’s simply a different way of packaging, with a number of benefits:
    PyLink and the eyelink plug-ins are included, so it works out of the box with the Eyelink series of eye trackers... "

    My questions is: Do both the regular portable and winPython portable packages have the PyLink and eyelink plug-ins already set up and work out of the box, or only the winPython one? If only the winPython one, could you please help to make the download link work :)

    Thanks a lot and I really appreciate your time and help.

    Best wishes,

  • edited 8:06AM

    My questions is: Do both the regular portable and winPython portable packages have the PyLink and eyelink plug-ins already set up and work out of the box, or only the winPython one? If only the winPython one, could you please help to make the download link work

    pylink is not included with the official OpenSesame package (due to license restrictions), only with the WinPython package. The EyeLink plug-ins have been replaced by the PyGaze plug-ins, which are included by default in the official package.

    My recommendation would be to stick to the official OpenSesame package (i.e. not the WinPython one) and simply follow the instructions from here to install pylink:

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