id summary reporter owner description type status priority milestone component version resolution keywords cc blockedby blocking notify_on_close platform project 459 extract_mmCIF_tables returned NULL without setting an error Tom Goddard Greg Couch "I've seen this error several times where extract_mmCIF_tables C++ code returns NULL without setting an error message, but it doesn't seem to happen reproducibly. sym #1 c8 sym #1 clear Traceback (most recent call last): File ""/Users/goddard/ucsf/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/cmd_line/tool.py"", line 147, in execute cmd.run(cmd_text) File ""/Users/goddard/ucsf/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/cli.py"", line 2236, in run results.append(ci.function(session, **kw_args)) File ""/Users/goddard/ucsf/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/sym.py"", line 67, in sym assem = pdb_assemblies(m) File ""/Users/goddard/ucsf/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/sym.py"", line 148, in pdb_assemblies m.assemblies = alist = mmcif_assemblies(m) File ""/Users/goddard/ucsf/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/sym.py"", line 158, in mmcif_assemblies assem, assem_gen, oper, cremap1, cremap2 = mmcif.get_mmcif_tables(model.filename, table_names) File ""/Users/goddard/ucsf/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/atomic/mmcif.py"", line 157, in get_mmcif_tables data = _mmcif.extract_mmCIF_tables(filename, table_names) SystemError: returned NULL without setting an error " defect closed major Input/Output fixed all ChimeraX