Dear Sir or Madam, We are looking forward to a beamtime investigating americium complexes and I wanted to create feff-paths for americium sulfate by using crystallographic data of europium sulfate and replacing Eu by Am. Atoms runs well and creates the feff.inp but when I then try tu run Feff I just get the error message Feff 6L.02 ? Eu H4 N O8 S2 Ruiz-Valero, Caridad New catalytically active neodymium sulfate Calculating potentials and phases... free atom potential and density for atom type 0 cannot remove an electron from this level Fatal Error: at GETORB-1 Their seems to be a problem with the atomic number because if I change Z=95 to 94 it runs without any problem. Is it possible to run it anyway with Z=95 or must I go for 94 instead which is the atomic number of Pu? Furthermore, I wanted to calculate the potentials with SCF approach but I read a lot of "google search results" without finding any helpful information.Or isn't it needed at all...? Many thanks in advance and best regards Daniel Fröhlich ______________________________________________ Dr. Daniel Fröhlich Physikalisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 253 D-69120 Heidelberg, Germany Institut für Nukleare Entsorgung (INE) Karlsruher Institut für Technologie (KIT) Campus Nord P.O. Box 3640 D-76021 Karlsruhe, Germany