Hi, > python-ase/3.6.0.2515(27):ERROR:150: Module 'python-ase/3.6.0.2515' > conflicts with the currently loaded module(s) 'python-ase/3.9.1' > python-ase/3.6.0.2515(27):ERROR:102: Tcl command execution failed: > conflict python-ase First get rid of that. Cheers, Gaël