Hello, I got this error when I was trying to minimize a structure. please tell me what went wrong. Executing testchim.py...Opening test1_chimera.mol2...1 model opened Traceback (most recent call last): File "/data/pgm/chimera/chimera_1.2422/share/__main__.py", line 59, in ? value = chimeraInit.init(sys.argv) File "CHIMERA/share/chimeraInit.py", line 298, in init chimera.openModels.open(a, prefixableType=1) File "CHIMERA/share/chimera/__init__.py", line 1253, in open File "CHIMERA/share/chimera/__init__.py", line 746, in _openPython File "testchim.py", line 10, in ? rc("minimize nsteps 70000 stepsize 0.001 interval 100 freeze none nogui true") File "CHIMERA/share/chimera/__init__.py", line 1912, in runCommand File "CHIMERA/share/Midas/midas_text.py", line 60, in makeCommand File "CHIMERA/share/MMMD/ChimeraExtension.py", line 29, in cmdMMMD File "CHIMERA/share/Midas/midas_text.py", line 281, in doExtensionFunc File "CHIMERA/share/Midas/midas_text.py", line 1885, in _getRealKw MidasError: Keyword 'nsteps' doesn't match any known keywords Error while processing testchim.py: MidasError: Keyword 'nsteps' doesn't match any known keywords (see reply log for Python traceback info) This is my program. I tried to execute it from command line using chimera --nogui testchim.py import os import chimera from chimera import runCommand as rc from chimera import replyobj os.chdir("/data2/di/database_build/outputs/outputs_mol2_sdf") fn = "test1_chimera.mol2" rc("open " + fn) rc("minimize nsteps 70000 stepsize 0.001 interval 100 freeze none nogui true") rc("write format mol2 0 min/" + fn) rc("close all") rc("stop now")