Andreas Förster wrote: > > I have a structure with three chains in the asymmetric unit. When I > select "Refine/Improve Ramachandran Plot" from Extensions/All Molecule, > coot does its thing until it reaches the end of the second chain, then > stops with the errors pasted below. ... > > Any ideas why the coot extension should fail while the scheme function > executes happily? Oh, I should say I'm using coot 0.6-pre-1 rev. 2189 > Ancient Coot :) OK, I'll take this to mean "please make it trivially easy for me to update my Coot" Paul.