[solved] problem loading iViewXAPI.dll

Comments

• Edwin

  October 2014 edited 7:40PM

  Hi,

  Is iViewXAPI.dll in the pygaze\_eyetracker directory? If it isn't, please do copy it in there and try again.

  I'm not sure why it would load via the command line and not via OpenSesame. What have you typed in exactly, to try to load it? Also, if you try the examples (e.g. the slideshow that come with the PyGaze package, do they run when you set the TRACKERTYPE to 'smi'?

  Thanks!

  Edwin
• shiroandy

  December 2014 edited 7:40PM

  Hi again,

  We have ensured that the iViewXAPI.dll is in the pygaze\_eyetracker directory and that the TRACKERTYPE is set to 'smi'. Testing Pygaze externally (from within Psychopy) ran without problem, after we modified the connection settings (as we're using a dual system setup).

  # from: 
  res = iViewXAPI.iV_Connect(
      c_char_p(ip), c_int(sendport), c_char_p(ip), c_int(receiveport)
  )
  # to: 
  res = iViewXAPI.iV_Connect(
      c_char_p('192.168.2.1'), c_int(4444), c_char_p('192.168.2.0'), c_int(5555)
  )
  

  However, when we try to run the most basic pygaze experiment within opensesame, we get the following error:

  Unexpected error
  
  line: 365
  exception message: 
  exception type: WindowsError
  
  Traceback:
    File "dist\libqtopensesame\runners\inprocess_runner.py", line 36, in execute
    File "dist\libopensesame\experiment.py", line 344, in run
    File "dist\libopensesame\sequence.py", line 47, in run
    File "C:\Program Files\OpenSesame\plugins\pygaze_init\pygaze_init.py", line 198, in run
    File "C:\Program Files\OpenSesame\pygaze\eyetracker.py", line 77, in __init__
    File "C:\Program Files\OpenSesame\pygaze\_eyetracker\libsmi.py", line 47, in <module>
    File "C:\Program Files\OpenSesame\pygaze\_eyetracker\iViewXAPI.py", line 75, in <module>
    File "ctypes\__init__.pyc", line 443, in LoadLibrary
    File "ctypes\__init__.pyc", line 365, in __init__
  WindowsError: [Error 193] %1 ist keine zulässige Win32-Anwendung
  

  At this point, we're stumped...any ideas?

  Thanks again for your help
• sebastiaan

  December 2014 edited 7:40PM

  One thing that comes to mind is that this DLL may not be compatible with the Python environment that is included with OpenSesame. For example, did you use a 64 bit python environment when testing PyGaze externally? Or are there any other notable differences between the two Python environments? You can type modules () in the OpenSesame debug window to get a list of all relevant versions.

  Cheers!
  Sebastiaan

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!
  
• frnk

  February 2015 edited 7:40PM

  I've had the same problem. Deleting the file inpout32.dll from the OpenSesame directory (which seems to be corrupted) solved the problem for me and I was able to load the dll.
• Edwin

  February 2015 edited 7:40PM

  Thanks for sharing!
• shiroandy

  March 2015 edited 7:40PM

  Many thanks for this. That seems to have solved the problem.
• Jessica Bourgin

  February 2017 edited February 2017

  Hi,
  If the iViewXAPI.dll is not in the _eyetracker, how is it possible to download it ?
  I am trying to connect Opensesame 3.1.2 to an SMI eyetracker, and while my experiment worked fine with Eyelink 1000, it doesn't work with the SMI (a RED 500).
  The error I get is the following :

    File "C:\Program Files\OpenSesame\lib\site-packages\libopensesame\inline_script.py", line 102, in run
      self.experiment.python_workspace._exec(self.crun)
    File "C:\Program Files\OpenSesame\lib\site-packages\libopensesame\python_workspace.py", line 161, in _exec
      exec(bytecode, self._globals)
    File "<string>", line 2, in <module>
    File "C:\Program Files\OpenSesame\pygaze\_eyetracker\libsmi.py", line 42, in <module>
      from iViewXAPI import  *
    File "C:\Program Files\OpenSesame\pygaze\_eyetracker\iViewXAPI.py", line 74, in <module>
      iViewXAPI = windll.LoadLibrary("iViewXAPI.dll")
    File "C:\Program Files\OpenSesame\lib\ctypes\__init__.py", line 440, in LoadLibrary
      return self._dlltype(name)
    File "C:\Program Files\OpenSesame\lib\ctypes\__init__.py", line 362, in __init__
      self._handle = _dlopen(self._name, mode)
  WindowsError: [Error 126] The specified module could not be found
  

  Could someone help me with issue ? Please tell me if further details are required.
  Jessica
• Jessica Bourgin

  February 2017

  @sebastiaan I am sorry I posted twice the same question. I did so because I thought my comment would not be seen here because the discussion is marked as "solved". Do you think I can have an answer here ?
• sebastiaan

  February 2017

  The missing file (iViewXAPI.dll) is part of the iViewX SDK, the software-development kit provided by SMI. You probably received the SDK with your SMI device, but if you can request it from here:

  • http://www.smivision.com/en/gaze-and-eye-tracking-systems/support/software-download.html

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!
  
• Jessica Bourgin

  February 2017

  @sebastiaan Thanks a lot for your answer, it is now perfectly working !
  Best regards
  Jessica
• Z_a_c192

  June 2018

  @Edwin "Is iViewXAPI.dll in the pygaze_eyetracker directory? If it isn't, please do copy it in there and try again."
  I don't have that dll and I can't find it anywhere. Do you know where I can download it? or maybe you could upload it?
• Edwin

  June 2018

  As @sebastiaan mentioned two comments up, the DLL is part of the SMI SDK. It's proprietary, so I'm afraid I can't upload it.