Dear phenixbb, This is a question about phenix.erraser. I had it running in March 2016, but it no longer works. I am using phenix-dev2686. I am also using the rosetta_src_2016.59086_bundle that was released in November 2016. Rosetta works fine for other tasks. I set in my bashrc file the following: export PHENIX_ROSETTA_PATH=/Users/blaine-mooers/software/rosetta_src_2016.46.59086_bundle If I use the gui or the command line, I get an error message that suggests using a relative path to the rosetta directory. This does not work either. I also tried extending the path incrementally down to the directory containing the erraser binaries. There must be some other issue. I suspect that between March and November 2016 that there has been reorganization of the directory hierarchy in rosetta. There is no longer a "tools" subfolder in the top directory. The file erraser_option.py is now located in ./rosetta_src_2016.46.59086_bundle/main/source/src/apps/public/ERRASER. Best regards, Blaine Blaine Mooers, Ph.D. Assistant Professor Department of Biochemistry and Molecular Biology, College of Medicine University of Oklahoma Health Sciences Center 975 NE 10th Street, BRC 466 Oklahoma City, OK 73104-5419 Faculty webpagehttp://www.oumedicine.com/department-of-biochemistry-and-molecular-biology/f... X-ray lab (LBSF)http://http://research.ouhsc.edu/CoreFacilities/LaboratoryofBiomolecularStru... Molecular Graphicshttps://www.oumedicine.com/docs/default-source/ad-biochemistry-workfiles/mol... Links https://www.oumedicine.com/docs/default-source/ad-biochemistry-workfiles/Mol... Small Angle Scattering http://www.oumedicine.com/docs/default-source/ad-biochemistry-workfiles/smal... office: (405) 271-8300 lab: (405) 271-8313 e-mail: [email protected]