Hello, Many thanks for your answers. I initially ran the 4.0.9 version when I encountered the problem that I described, so I tried an older version (4.0.8) to begin problem determination Following your advices, I reinstalled the 4.0.9 version after rebooting the system. And the problem has gone this morning, Paint.net seems to work like a charme. As I don't believe to ghosts, I (re)enclose the full text of the crashes. If someone can tell me what happened I would be grateful. Another hypothesis would be that it comes from Windows 10 as since I moved from Windows 7, I didn't feel very well. Strange comportments, lags etc... BR. Daniel.
PaintTrouble.txt