hello, Dear Gate Users, Recently I have some trouble with the GATE simulation and I would like to know your experience and comments. My problem is when I run the GATE for a little long time (may be from 10 hours to several days), the program might crash and stop somewhere. This does not happen every time, some time I can let it run for 1 week without crash, but some time it crashes. When I was using the old version of GATE (1.0 or 2.2), I remember usually the crashes were caused by the overlap between different solid or geometries. But now with GATE 3.0, Geant4.8.0.p01, CLHEP 2.0.2.2, even very simple geometry and after checking the scripts carefully many times , it may still has this problem. According to my experience, most of the time if the program crash, it happens in the GateCoincidenceSorter. And if I use the same random file run the program again, it will crash at exactly the same place. Do you people have encountered the same situation before? Do you have any idea about how it happens? The error in the scripts or some bugs of Geant4? And how can you avoid this? If it's possible, please share me with your opinion. Thank you. Yuxuan