Hi, In my refinement phenix.refine crashed with the following errors. ================================ xyz refinement =============================== Traceback (most recent call last): File "/nfs/home/jzhu/cci_apps_sources/phenix/phenix/command_line/ refine.py", line 5, in <module> command_line.run(command_name="phenix.refine", args=sys.argv[1:]) File "/nfs/home/jzhu/cci_apps_sources/phenix/phenix/refinement/ command_line.py", line 78, in run call_back_after_monitor_collect=call_back_after_monitor_collect) File "/nfs/home/jzhu/cci_apps_sources/phenix/phenix/refinement/ driver.py", line 1310, in run log = log) File "/nfs/home/jzhu/cci_apps_sources/phenix/phenix/refinement/ strategies.py", line 733, in refinement_machine h_params = h_params) File "/nfs/home/jzhu/cci_apps_sources/mmtbx/mmtbx/refinement/ minimization.py", line 136, in __init__ ignore_line_search_failed_step_at_lower_bound = True)) File "/nfs/home/jzhu/cci_apps_sources/scitbx/scitbx/lbfgs.py", line 242, in run log) File "/nfs/home/jzhu/cci_apps_sources/scitbx/scitbx/lbfgs.py", line 121, in run_c_plus_plus f, g = target_evaluator.compute_functional_and_gradients() File "/nfs/home/jzhu/cci_apps_sources/mmtbx/mmtbx/refinement/ minimization.py", line 369, in compute_functional_and_gradients u_iso_refinable_params = u_iso_refinable_params) File "/nfs/home/jzhu/cci_apps_sources/mmtbx/mmtbx/refinement/ minimization.py", line 224, in compute_target sf_v3d_sel = sf_v3d.set_selected(self.hd_selection, [0,0,0]) RuntimeError: scitbx Internal Error: /net/sharptail/scratch1/rwgk/ auto_build/sources/scitbx/include/scitbx/array_family/boost_python/ flex_wrapper.h(473): SCITBX_ASSERT(a.accessor() == flags.accessor()) failure. What happened here? Thanks. Jianghai +++++++++++++++++++++++++++++++ Jianghai Zhu, Ph.D CBR Institute for Biomedical Research Department of Pathology Harvard Medical School 200 Longwood Ave., Boston, MA 02115 Ph: 617-278-3211 Fx: 618-278-3232 +++++++++++++++++++++++++++++++