Hi Olivier, I tried getting a fresh branch of python_syscalc but trying to run fails with this error: ImportError : No module named various.systematics And in the log file: File "/Users/evryonidou/Desktop/python_syscalc/check/bin/internal/common_run_interface.py", line 1336, in do_systematics import internal.various.systematics as systematics ImportError: No module named various.systematics So I couldn’t go further with any other checks… Do you have any idea what this problem is? Cheers, Eleni > On 12 Aug 2016, at 01:55, Olivier Mattelaer