I tried to use phenix.find_blobs command but it ended up with a Python crash. Any thoughts? Thanks a lot Oleg P.S. I tried to attached the input files but it seems to be over the allowed message size phenix.find_blobs protein_pdb_file_name=1LRI-H_refine_001.pdb map_coeffs_file_nam=1LRI-H_refine_001.mtz #phil __OFF__ banner #phil __ON__ find_blobs { input { protein_pdb_file_name = "1LRI-H_refine_001.pdb" data_file_name = None map_coeffs_file_name = "1LRI-H_refine_001.mtz" } output { blob_number = None } options { random_seed = 0 density_contour = 2.5 } } #phil __END__ Random number seed: 3628800 Adding PDB model from 1LRI-H_refine_001.pdb Traceback (most recent call last): File "/home/oleg/phenix-1.11.1-2575/build/../modules/phenix/phenix/command_line/find_blobs.py", line 169, in <module> run( tuple(args) ) File "/home/oleg/phenix-1.11.1-2575/build/../modules/phenix/phenix/command_line/find_blobs.py", line 162, in run rc = execute(params) File "/home/oleg/phenix-1.11.1-2575/build/../modules/phenix/phenix/command_line/find_blobs.py", line 98, in execute bfo.setup_blobs(working_params.options.density_contour) File "/home/oleg/phenix-1.11.1-2575/modules/phenix/phenix/ligands/blob_finding_class.py", line 25, in setup_blobs contour=contour, File "/home/oleg/phenix-1.11.1-2575/modules/phenix/phenix/ligands/DensityBlobsClass.py", line 14, in __init__ self.map_residue = self.data_map["fofc_fft_map"] # fft map TypeError: 'fft_map' object has no attribute '__getitem__'