Program: 37672
Project: 37672
Buggy source:
private void okAction(){
  File file=new File(assemblerText.getText());
  if (!file.exists() || file.isDirectory()) {
    String message=String.format("String_Node_Str",assemblerText.getText());
    if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
      return;
    }
  }
  file=new File(listingText.getText());
  if (!file.exists() || file.isDirectory()) {
    String message=String.format("String_Node_Str",listingText.getText());
    if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
      return;
    }
  }
  file=new File(objectText.getText());
  if (!file.exists() || file.isDirectory()) {
    String message=String.format("String_Node_Str",objectText.getText());
    if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
      return;
    }
  }
  for (  String path : macroText.getText().split("String_Node_Str")) {
    file=new File(path);
    if (!file.exists() || file.isDirectory()) {
      String message=String.format("String_Node_Str",path);
      if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
        return;
      }
    }
  }
  file=new File(tapeText.getText());
  if (!file.exists() || file.isDirectory()) {
    String message=String.format("String_Node_Str",tapeText.getText());
    if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
      return;
    }
  }
  file=new File(diagnosticText.getText());
  if (!file.exists() || file.isDirectory()) {
    String message=String.format("String_Node_Str",diagnosticText.getText());
    if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
      return;
    }
  }
  AssemblerOptions.assemblerPath=assemblerText.getText();
  AssemblerOptions.boot=bootCheckBox.isSelected();
  AssemblerOptions.bootLoader=bootIBMRadioButton.isSelected() ? AssemblerOptions.BOOT_IBM : bootVan1RadioButton.isSelected() ? AssemblerOptions.BOOT_VAN_1 : bootVan2RadioButton.isSelected() ? AssemblerOptions.BOOT_VAN_2 : AssemblerOptions.BOOT_NONE;
  AssemblerOptions.encoding=encodingCheckBox.isSelected();
  AssemblerOptions.encodingChoice=encodingSimhRadioButton.isSelected() ? AssemblerOptions.ENCODING_SIMH : encodingARadioButton.isSelected() ? AssemblerOptions.ENCODING_A : encodingHRadioButton.isSelected() ? AssemblerOptions.ENCODING_H : AssemblerOptions.ENCODING_PRINT;
  AssemblerOptions.listing=listingCheckBox.isSelected();
  AssemblerOptions.listingPath=listingText.getText();
  AssemblerOptions.object=objectCheckBox.isSelected();
  AssemblerOptions.objectPath=objectText.getText();
  AssemblerOptions.macro=macroCheckBox.isSelected();
  AssemblerOptions.macroPath=macroText.getText();
  AssemblerOptions.tape=tapeCheckBox.isSelected();
  AssemblerOptions.tapePath=tapeText.getText();
  AssemblerOptions.diagnostic=diagnosticCheckBox.isSelected();
  AssemblerOptions.diagnosticPath=diagnosticText.getText();
  AssemblerOptions.codeOk=codeOkCheckBox.isSelected();
  AssemblerOptions.interleave=interleaveCheckBox.isSelected();
  AssemblerOptions.store=storeCheckBox.isSelected();
  AssemblerOptions.dump=dumpCheckBox.isSelected();
  AssemblerOptions.page=pageCheckBox.isSelected();
  AssemblerOptions.pageLength=pageText.getText();
  AssemblerOptions.trace=traceCheckBox.isSelected();
  AssemblerOptions.traceLexer=traceLexerCheckBox.isSelected();
  AssemblerOptions.traceParser=traceParserCheckBox.isSelected();
  AssemblerOptions.traceProcess=traceProcessCheckBox.isSelected();
  AssemblerOptions.extras=extrasCheckBox.isSelected();
  AssemblerOptions.extrasEx=extrasExCheckBox.isSelected();
  AssemblerOptions.extrasEnd=extrasEndCheckBox.isSelected();
  AssemblerOptions.extrasQueue=extrasQueueCheckBox.isSelected();
  AssemblerOptions.extrasReloader=extrasReloaderCheckBox.isSelected();
  AssemblerOptions.command=buildCommand();
  this.setVisible(false);
}

Fixed version (ground truth):
private void okAction(){
  File file=new File(assemblerText.getText());
  if (!file.exists() || file.isDirectory()) {
    String message=String.format("String_Node_Str",assemblerText.getText());
    if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
      return;
    }
  }
  if (listingCheckBox.isSelected()) {
    file=new File(listingText.getText());
    if (!file.exists() || file.isDirectory()) {
      String message=String.format("String_Node_Str",listingText.getText());
      if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
        return;
      }
    }
  }
  if (objectCheckBox.isSelected()) {
    file=new File(objectText.getText());
    if (!file.exists() || file.isDirectory()) {
      String message=String.format("String_Node_Str",objectText.getText());
      if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
        return;
      }
    }
  }
  if (macroCheckBox.isSelected()) {
    for (    String path : macroText.getText().split("String_Node_Str")) {
      file=new File(path);
      if (!file.exists() || !file.isDirectory()) {
        String message=String.format("String_Node_Str",path);
        if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
          return;
        }
      }
    }
  }
  if (tapeCheckBox.isSelected()) {
    file=new File(tapeText.getText());
    if (!file.exists() || file.isDirectory()) {
      String message=String.format("String_Node_Str",tapeText.getText());
      if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
        return;
      }
    }
  }
  if (diagnosticCheckBox.isSelected()) {
    file=new File(diagnosticText.getText());
    if (!file.exists() || file.isDirectory()) {
      String message=String.format("String_Node_Str",diagnosticText.getText());
      if (JOptionPane.showConfirmDialog(null,message,"String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
        return;
      }
    }
  }
  AssemblerOptions.assemblerPath=assemblerText.getText();
  AssemblerOptions.boot=bootCheckBox.isSelected();
  AssemblerOptions.bootLoader=bootIBMRadioButton.isSelected() ? AssemblerOptions.BOOT_IBM : bootVan1RadioButton.isSelected() ? AssemblerOptions.BOOT_VAN_1 : bootVan2RadioButton.isSelected() ? AssemblerOptions.BOOT_VAN_2 : AssemblerOptions.BOOT_NONE;
  AssemblerOptions.encoding=encodingCheckBox.isSelected();
  AssemblerOptions.encodingChoice=encodingSimhRadioButton.isSelected() ? AssemblerOptions.ENCODING_SIMH : encodingARadioButton.isSelected() ? AssemblerOptions.ENCODING_A : encodingHRadioButton.isSelected() ? AssemblerOptions.ENCODING_H : AssemblerOptions.ENCODING_PRINT;
  AssemblerOptions.listing=listingCheckBox.isSelected();
  AssemblerOptions.listingPath=listingText.getText();
  AssemblerOptions.object=objectCheckBox.isSelected();
  AssemblerOptions.objectPath=objectText.getText();
  AssemblerOptions.macro=macroCheckBox.isSelected();
  AssemblerOptions.macroPath=macroText.getText();
  AssemblerOptions.tape=tapeCheckBox.isSelected();
  AssemblerOptions.tapePath=tapeText.getText();
  AssemblerOptions.diagnostic=diagnosticCheckBox.isSelected();
  AssemblerOptions.diagnosticPath=diagnosticText.getText();
  AssemblerOptions.codeOk=codeOkCheckBox.isSelected();
  AssemblerOptions.interleave=interleaveCheckBox.isSelected();
  AssemblerOptions.store=storeCheckBox.isSelected();
  AssemblerOptions.dump=dumpCheckBox.isSelected();
  AssemblerOptions.page=pageCheckBox.isSelected();
  AssemblerOptions.pageLength=pageText.getText();
  AssemblerOptions.trace=traceCheckBox.isSelected();
  AssemblerOptions.traceLexer=traceLexerCheckBox.isSelected();
  AssemblerOptions.traceParser=traceParserCheckBox.isSelected();
  AssemblerOptions.traceProcess=traceProcessCheckBox.isSelected();
  AssemblerOptions.extras=extrasCheckBox.isSelected();
  AssemblerOptions.extrasEx=extrasExCheckBox.isSelected();
  AssemblerOptions.extrasEnd=extrasEndCheckBox.isSelected();
  AssemblerOptions.extrasQueue=extrasQueueCheckBox.isSelected();
  AssemblerOptions.extrasReloader=extrasReloaderCheckBox.isSelected();
  AssemblerOptions.command=buildCommand();
  this.setVisible(false);
}