# Eyelink toolbox (Linux)

**URL:** https://psychtoolbox.discourse.group/t/eyelink-toolbox-linux/275
**Category:** Uncategorized
**Created:** [October 4, 2016, 9:53pm UTC](https://psychtoolbox.discourse.group/t/eyelink-toolbox-linux/275 "2016-10-04T21:53:34Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![rogierland](https://avatars.discourse-cdn.com/v4/letter/r/e480ec/32.png) [@rogierland](https://psychtoolbox.discourse.group/u/rogierland)
#### Post date: [October 4, 2016, 9:53pm UTC](https://psychtoolbox.discourse.group/t/eyelink-toolbox-linux/275/1 "2016-10-04T21:53:34Z")

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When I do EyelinkInit, I get this error  
  
Invalid MEX-file '/usr/share/psychtoolbox-3/PsychHardware/EyelinkToolbox/EyelinkBasic/Eyelink.mexa64': libeyelink\_core-1.9.so.58:  
cannot open shared object file: No such file or directory  
  
What can I do to fix this?  
Other functions such as DotDemo, BubbleDemo and GetSecs seem to work OK.   
Many thanks ..  
  
  
  
  
Ubuntu 16.04 LTS  
Followed installation instructions on   
  
[Psychtoolbox-3 - Download, Installation, and Update](http://psychtoolbox.org/download/#Linux)
 

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   [Psychtoolbox-3 - Download, Installation, and Update](http://psychtoolbox.org/download/#Linux)
Psychtoolbox-3 Psychophysics Toolbox Version 3 (PTB-3) is a free set of Matlab and GNU Octave functions for vision and neuroscience research. 

 
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 [View on psychtoolbox.org](http://psychtoolbox.org/download/#Linux)
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  Preview by Yahoo  
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and   
  
[matlab-psychtoolbox-3 – toolbox for vision research – Matlab bindings — Debian Neuroscience Package Repository](http://neuro.debian.net/pkgs/matlab-psychtoolbox-3.html)
 

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   [matlab-psychtoolbox-3 – toolbox for vision research – Matlab bindings — Debian Neuroscience Pac...](http://neuro.debian.net/pkgs/matlab-psychtoolbox-3.html)
matlab-psychtoolbox-3 – toolbox for vision research – Matlab bindings¶ Related packages matlab-psychtoolbox-3-nonfree octave-psychtoolbox-3-nonfree More information License External resources 

 
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 [View on neuro.debian.net](http://neuro.debian.net/pkgs/matlab-psychtoolbox-3.html)
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  Preview by Yahoo  
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<div class="post-metadata">

### Author: ![zack\_lb](https://avatars.discourse-cdn.com/v4/letter/z/b4bc9f/32.png) [@zack\_lb](https://psychtoolbox.discourse.group/u/zack_lb)
#### Post date: [October 4, 2016, 11:59pm UTC](https://psychtoolbox.discourse.group/t/eyelink-toolbox-linux/275/2 "2016-10-04T23:59:13Z")

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Download [this](http://download.sr-support.com/linuxDisplaySoftwareRelease/EyeLinkDisplaySoftware1.9_x64.tar.gz) and extract the contents of the lib folder into /usr/lib.