Hi Michael, Could you check out a completely new copy of your branch and try to run the GUI on that copy? I'm guessing that there is a module called auto_analyses/noe.py in your local copy that should be added to the 1.3 line? If I try to run relax, I see the following: [edau@localhost bieri_gui]$ ./relax Traceback (most recent call last): File "./relax", line 54, in <module> import gui_bieri File "gui_bieri/__init__.py", line 40, in <module> from relax_gui import Main File "gui_bieri/relax_gui.py", line 51, in <module> from analyses.auto_noe import Auto_noe File "gui_bieri/analyses/auto_noe.py", line 35, in <module> from auto_analyses.noe import NOE_calc ImportError: No module named noe [edau@localhost bieri_gui]$ Cheers, Edward