I was running phenix refinement using the following command: phenix.refine data.mtz model.pdb \ strategy=individual_sites+tls+individual_adp \ my_lib.cif tls.params the run crashed with the error: ...... ...... File "/usr/local/phenix-1.3-final/mmtbx/mmtbx/monomer_library/pdb_interpretation.py", line 970, in get_lib_link atom_dicts[angle.atom_3_comp_id].get(angle.atom_id_3, None)] IndexError: list index out of range Is the index error refering to some problem in the reflection file (mtz)? Thanks for any suggestions. Huiying _____ Huiying Li, Ph. D Department of Molecular Biology and Biochemistry Natural Sciences I, Rm 2443 University of California at Irvine Irvine, CA 92697, USA Tel: 949-824-4322(or -1953); Fax: 949-824-3280 email: [email protected]