Image window appears than it crashes #7

I had some issues about running the code. Before I downloaded from here I coppied all lines from your project webpage: http://www.thevelop.nl/blog/2016-12-25/ThreadTone/ With somo minor modifications I succeded to run the code. However there is no display modules like you shared in project webpage. Thus I decided to download the updated version from github. When I run the code there is an image windows appears than it freezes. I tried to reduced numPines and numLines but result is still the same. Could you please help me to figure out what is the problem.