DLL load failed: The specified procedure could not be found.

huss203

Hello,

I'm a IT support person we are getting this error in our virtual lab environment "DLL load failed: The specified procedure could not be found." more detailed error below. On physical computer I do not get this message. I checked few things like python installed few versions same result and updated vc++ redistributables.

Thank you,

"Details

item-stack: ``

time: Tue Nov 17 16:58:38 2020

exception type: ImportError

exception message: DLL load failed: The specified procedure could not be found.

Traceback (also in debug window)

 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\libqtopensesame\misc\process.py", line 158, in run
  exp.run()
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\libopensesame\experiment.py", line 451, in run
  self.init_display()
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\libopensesame\experiment.py", line 731, in init_display
  canvas.init_display(self)
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\openexp\canvas.py", line 63, in init_display
  cls = backend.get_backend_class(experiment, u'canvas')
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\openexp\backend.py", line 154, in get_backend_class
  return getattr(get_backend_mod(experiment, _type), name)
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\openexp\backend.py", line 132, in get_backend_mod
  return __import__('openexp._%s.%s' % (_type, name), fromlist=['dummy'])
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\openexp\_canvas\psycho.py", line 28, in <module>
  from psychopy import visual, event, core, logging
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\psychopy\visual\__init__.py", line 22, in <module>
  from .basevisual import BaseVisualStim
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\psychopy\visual\basevisual.py", line 42, in <module>
  from psychopy.tools.monitorunittools import (cm2pix, deg2pix, pix2cm,
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\psychopy\tools\monitorunittools.py", line 15, in <module>
  from psychopy import monitors
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\psychopy\monitors\__init__.py", line 10, in <module>
  from .calibTools import *
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\psychopy\monitors\calibTools.py", line 36, in <module>
  import scipy.optimize as optim
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\scipy\optimize\__init__.py", line 391, in <module>
  from ._minimize import *
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\scipy\optimize\_minimize.py", line 30, in <module>
  from ._trustregion_constr import _minimize_trustregion_constr
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\scipy\optimize\_trustregion_constr\__init__.py", line 4, in <module>
  from .minimize_trustregion_constr import _minimize_trustregion_constr
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\scipy\optimize\_trustregion_constr\minimize_trustregion_constr.py", line 4, in <module>
  from scipy.sparse.linalg import LinearOperator
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\scipy\sparse\linalg\__init__.py", line 116, in <module>
  from .eigen import *
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\scipy\sparse\linalg\eigen\__init__.py", line 11, in <module>
  from .arpack import *
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\scipy\sparse\linalg\eigen\arpack\__init__.py", line 22, in <module>
  from .arpack import *
 File "C:\Program Files (x86)\OpenSesame\Lib\site-packages\scipy\sparse\linalg\eigen\arpack\arpack.py", line 45, in <module>
  from . import _arpack
ImportError: DLL load failed: The specified procedure could not be found."

sebastiaan

Hi @huss203 ,

My main guess would be that your systems have multiple versions of some DLL that is used by SciPy, and that the wrong DLL is picked up, for example because the location of this other DLL comes before the location of the DLL that is bundled with OpenSesame. Could it be something along those lines?

— Sebastiaan

huss203

Thank you Sebastiaan, I will try to pin point with the DLL., we do have lot of other applications running...

lvanderlinden

Thanks so much @romankris !