OpenSesame crashes on Ubuntu 16.04
Dear forum,
I'm trying OpenSesame for the first time but unfortunately I'm running into problems with the eye-tracking template which consistently crashes on my Ubuntu install.
I did the following:
- Install OpenSesame through the PPA on Ubuntu 16.04 (current LTS release).
- Start OpenSesame in a terminal.
- Choose backend PsychoPy.
- Start experiment by clicking the play button.
- Enter subject ID.
- Select file name.
The screen turns black for ~500ms and then I'm back in the OpenSesame GUI where I see the following error message:
Stopped
The experiment did not finish normally for the following reason:
Unexpected error
Details
item-stack: experiment[run].pygaze_init[run]
exception message: 'float' object cannot be interpreted as an index
time: Mon Jun 12 12:12:57 2017
exception type: TypeError
Traceback (also in debug window)
File "/usr/lib/python2.7/dist-packages/libqtopensesame/misc/process.py", line 140, in run
exp.run()
File "/usr/lib/python2.7/dist-packages/libopensesame/experiment.py", line 413, in run
self.items.execute(self.var.start)
File "/usr/lib/python2.7/dist-packages/libopensesame/item_store.py", line 91, in execute
self.run(name)
File "/usr/lib/python2.7/dist-packages/libopensesame/item_store.py", line 106, in run
self[name].run()
File "/usr/lib/python2.7/dist-packages/libopensesame/sequence.py", line 51, in run
self.experiment.items.run(_item)
File "/usr/lib/python2.7/dist-packages/libopensesame/item_store.py", line 106, in run
self[name].run()
File "/usr/share/opensesame_plugins/pygaze_init/pygaze_init.py", line 207, in run
self.beep = synth(self.experiment)
File "/usr/lib/python2.7/dist-packages/openexp/synth.py", line 62, in synth
_envelope = envelope(length, attack, decay, rate)
File "/usr/lib/python2.7/dist-packages/openexp/synth.py", line 159, in envelope
e = np.ones(length*rate)
File "/usr/local/lib/python2.7/dist-packages/numpy/core/numeric.py", line 192, in ones
a = empty(shape, dtype, order)
TypeError: 'float' object cannot be interpreted as an index
At first, I thought that the template can perhaps not be run without changes but it does run on my colleagues Windows machine. Any advice on how to fix this issue?
Comments
Hi,
Yes, this is an incompatibility between certain versions of numpy and OpenSesame. It's been fixed in the unstable releases of 3.1.7. You can install those from the
opensesame-jamesppa:Of course, this is a testing repository, so proceed with caution!
Cheers,
Sebastiaan
Check out SigmundAI.eu for our OpenSesame AI assistant!
I get the following error message. Would there be a simple way to solve this? This is in Ubuntu 15.04 after installing the latest version (Nov 2017).
Hi Frouke,
It looks like you have an old version of QProgEdit installed, which doesn't work with PyQt5. You can upgrade by running:
Does that solve things?
Cheers,
Sebastiaan
Check out SigmundAI.eu for our OpenSesame AI assistant!
Unfortunately, the problem persisted after installing the indicated software. I decided to upgrade to Lubuntu 16, 64 bits (clean install), and under this new version, the problem no longer occurs.