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Under Linux (on Centos7 and Unbuntu, installed from the precompiled packages), when I launch KLayout, I always have the messages :
ERROR : unable to create directory: /usr/bin/macros ERROR : unable to create directory: /usr/bin/pymacros ERROR : unable to create directory: /usr/bin/python . . .
But KLayout is fully working, it is just some red messages : how to void them ?