Hi there -
a transient message appears during anisotropic refinement CCP4 6.1: Refmac_5.5.0071 Problem in MAKE_U_POSITIVE that seems to have no further consequences. I guess that means that some elements in a U tensor lead to a divergent behavior, but details evade me. Just curious.. BR ----------------------------------------------------------------- Bernhard Rupp b...@ruppweb.org <http://www.ruppweb.org/> http://www.ruppweb.org/ ----------------------------------------------------------------- Anything is possible if you don't know what you are talking about. -----------------------------------------------------------------