Hi, I'm using autobuild in phenix-1.4-59 to rebuild the structure. Autobuild throws the error: **************************************** AutoBuild Input failed Sorry, the generation of cif files from AutoBuild_run_2_/TEMP0/LIGANDS.pdb did not work. Error message was: 'NoneType' object has no attribute 'id' **************************************** I think this may have to do with carbohydrates that I have in the structure. I provided the .eff and the .cif files for the carbohydrates but something must be going wrong. Could you, please, let me know how to troubleshoot this error? Katya -- Ekaterina Heldwein, Ph.D. Assistant Professor Department of Molecular Biology and Microbiology Tufts University 136 Harrison Ave Boston, MA 02111 phone: 617-636-0858 fax: 617-636-0337 e-mail: [email protected]