For me (Gimp-3.2.4 Win10), the plugin also wouldn’t register in the menu until I removed in colour-grading-v3.py the line:
if sys.platform == ‘win32’:
import io
sys.stdout = io.TextIOWrapper(sys.stdout.buffer, line_buffering=True)
It’s an inelegant solution, but the plugin now works correctly.
I was led to this step by problems with sys.stdout in my own plugins.
THANK YOU SO MUCH FOR THIS GREAT PLUGIN.
