Dear all,<br><br>I am refining a protein structure using phenix.refine, when i tried to use <br><pre class="literal-block">optimize_wxc, optimize_wxu<br><br>It always crashes and gives following error. May anybody can explain what is the problem??<br>
</pre><br><br><br>Traceback (most recent call last):<br>  File &quot;/public/xtal/phenix/phenix-1.3b/phenix-1.3b/phenix/phenix/command_line/refine.py&quot;, line 5, in &lt;module&gt;<br>    command_line.run(command_name=&quot;phenix.refine&quot;, args=sys.argv[1:])<br>
  File &quot;/public/xtal/phenix/phenix-1.3b/phenix-1.3b/phenix/phenix/refinement/command_line.py&quot;, line 78, in run<br>    call_back_after_monitor_collect=call_back_after_monitor_collect)<br>  File &quot;/public/xtal/phenix/phenix-1.3b/phenix-1.3b/phenix/phenix/refinement/driver.py&quot;, line 1308, in run<br>
    log                     = log)<br>  File &quot;/public/xtal/phenix/phenix-1.3b/phenix-1.3b/phenix/phenix/refinement/strategies.py&quot;, line 642, in refinement_machine<br>    log                           = log)<br>  File &quot;/public/xtal/phenix/phenix-1.3b/phenix-1.3b/phenix/phenix/refinement/weight_xray_chem.py&quot;, line 327, in __init__<br>
    self.wxc_optimization()<br>  File &quot;/public/xtal/phenix/phenix-1.3b/phenix-1.3b/phenix/phenix/refinement/weight_xray_chem.py&quot;, line 450, in wxc_optimization<br>    rw, rf, b, a, a_xc = self.wx_opt_helper(w = wxc_scale_0 * wxc, sites=True)<br>
  File &quot;/public/xtal/phenix/phenix-1.3b/phenix-1.3b/phenix/phenix/refinement/weight_xray_chem.py&quot;, line 387, in wx_opt_helper<br>    verbose             = 0)<br>TypeError: __init__() takes at least 5 non-keyword arguments (3 given)<br>
<br><br><br>Thanks in advance.<br><br><br>Yusuf<br><br clear="all"><br><br>