I even moved it to another directory so twserver wouldn't be able to find it anymore in the path defined with export command. But it's still running and writing a .submit script in the remote directories. This script is still the older version. I don't get a clue where it can find it.
I killed twserver, deleted the directory TWServer, I searched for a .TWServer directory that I found and deleted it and then restarted "./twserver cluster path", and it finds the 3 tw_job_***.sh scripts whereas tw_job_run.sh should be missing. And if I restart the GUI, and relaunch the error study with (for instance) 10 cores, it writes the same old .submit script in the remote directories, not the modified one of course. I don't find where all these informations are kept. I'm still trying to understand what's going on. :\
Emmanuel