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NeuroTechX / bci-workshop

Material for the BCI Workshop held at District 3 in May 2015 by BCI Montréal.
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lsl-viewer throws exception #21

Closed ThomasZiegert closed 6 years ago

ThomasZiegert commented 6 years ago

Hi,

when I try to setup the workshop files on a macbook pro, macos 10.13.5 I always get the following error, when starting the lsl-viewer:

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/anaconda2/envs/py36/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/anaconda2/envs/py36/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "lsl-viewer.py", line 120, in update_plot
    max_samples=12)
  File "/anaconda2/envs/py36/lib/python3.6/site-packages/pylsl/pylsl.py", line 844, in pull_chunk
    handle_error(errcode)
  File "/anaconda2/envs/py36/lib/python3.6/site-packages/pylsl/pylsl.py", line 1134, in handle_error
    raise InternalError("an internal error has occurred.")
pylsl.pylsl.InternalError: an internal error has occurred.

Any help is highly appreciated.

Best regards, Thomas

ThomasZiegert commented 6 years ago

What do you think @jdpigeon @hubertjb @syswsi @rcassani?

jdpigeon commented 6 years ago

Unfortunately, that error just indicates something went wrong with the compiled liblsl C code and it's not very informative.

My suspicion is that this is related to the fact that this workshop code is a bit out of date compared to the new Muse LSL library. We mean to refactor the workshop code to take advantage of Muse LSL more, but are still waiting to get the time.

I recommend installing Muse LSL and using it's CLI to create an LSL stream (muselsl stream) and view the data (muselsl view)

ThomasZiegert commented 6 years ago

Thanks, I'll try muselsl.