Pupil Capture Freezes on Calibration [Linux] [Running from source]

[nawper02]

Hello,

I am running the pupil capture software on Ubuntu linux from source. I am able to open capture and see the eye camera windows. Pupil detection appears to be working. However, upon trying to start calibration, the calibration window freezes, and I get the following messages in the console:

Delta:~/PycharmProjects/Pupil/pupil/pupil_src$ python3 main.py capture
[14:08:37] WARNING  eye0 - uvc: Could not set Value. 'Backlight Compensation'.                                                                                                                          uvc_backend.py:424
           WARNING  eye1 - uvc: Could not set Value. 'Backlight Compensation'.                                                                                                                          uvc_backend.py:424
[14:09:31] INFO     world - calibration_choreography.base_plugin: Starting  Calibration                                                                                                                 base_plugin.py:537
open(): No such file or directory
[14:09:34] INFO     world - calibration_choreography.base_plugin: Stopping  Calibration                                                                                                                 base_plugin.py:574
open(): No such file or directory
           ERROR    world - gaze_mapping.gazer_base: Calibration Failed!                                                                                                                                 gazer_base.py:203
           ERROR    world - gaze_mapping.gazer_base: Not sufficient reference data available.                                                                                                            gazer_base.py:297
           WARNING  world - plugin: Plugin Gazer3D failed to initialize

I believe the issue is the 'open(): No such file or directory' line. I suspect that wherever this error is occuring, it is freezing the program, and causing the following two errors and warning messages.

I took a look in base_plugin.py but found no calls to an 'open()' method. I don't know where the error is coming from.

It may be important to note that when I run an install of capture that I created using the provided .deb package, this issue does not occur (although the calibration runs as slow as 1fps).

If anybody could help with this, it would be greatly appreciated!