Hi, You did not attach your file. From what I see is that when you see the message: “Checking current version. (type ctrl-c to bypass the check)” then the following directory should still exists: > /home/sheng/MG5_aMC_v2_3_3/tests The step after that is to run ./tests/test_manager.py which is probably the script that remove your directory. I’m running this script 10 times a day and never face such problem. So I’m really puzzled Cheers, Olivier > On Dec 16, 2016, at 19:51, Sheng