Hi all, Using Psychopy v1.90.2 (running on Ubuntu 18.04) I am getting the following error message (below) when I attempt to run any code that involves a window (including the demos). The ‘shapes.py’ demo briefly flashes two black windows and then I get this output: Problem compiling: [Errno 13] P…

Gamma problem in v1.90.2

Catherine_Hanson November 7, 2018, 7:39pm 13

THANK YOU!!! This fixed my 18.04 problem.

AttributeError: 'NoneType' object has no attribute 'close'

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