Program: 162451
Project: 162451
Buggy source:
private void loadEditDialog(final PathSwitchPreference p){
  int fab_skin=activity.getColorPreference().getColor(ColorUsage.ACCENT);
  LayoutInflater li=LayoutInflater.from(activity);
  final View v=li.inflate(R.layout.dialog_twoedittexts,null);
  ((TextInputLayout)v.findViewById(R.id.text_input1)).setHint(getString(R.string.name));
  ((TextInputLayout)v.findViewById(R.id.text_input2)).setHint(getString(R.string.directory));
  final EditText editText1=((EditText)v.findViewById(R.id.text1)), editText2=((EditText)v.findViewById(R.id.text2));
  editText1.setText(p.getTitle());
  editText2.setText(p.getSummary());
  final MaterialDialog dialog=new MaterialDialog.Builder(getActivity()).title(R.string.edit_shortcut).theme(activity.getAppTheme().getMaterialDialogTheme()).positiveColor(fab_skin).positiveText(getString(R.string.edit).toUpperCase()).negativeColor(fab_skin).negativeText(android.R.string.cancel).customView(v,false).build();
  dialog.getActionButton(DialogAction.POSITIVE).setEnabled(FileUtils.isPathAccesible(editText2.getText().toString(),sharedPrefs));
  disableButtonIfTitleEmpty(editText1,dialog);
  disableButtonIfNotPath(editText2,dialog);
  dialog.getActionButton(DialogAction.POSITIVE).setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View view){
      final String oldName=p.getTitle().toString();
      final String oldPath=p.getSummary().toString();
      dataUtils.removeBook(position.get(p));
      position.remove(p);
      getPreferenceScreen().removePreference(p);
      p.setTitle(editText1.getText());
      p.setSummary(editText2.getText());
      position.put(p,position.size());
      getPreferenceScreen().addPreference(p);
      String[] values=new String[]{editText1.getText().toString(),editText2.getText().toString()};
      dataUtils.addBook(values);
      AppConfig.runInBackground(new Runnable(){
        @Override public void run(){
          utilsHandler.renameBookmark(oldName,oldPath,editText1.getText().toString(),editText2.getText().toString());
        }
      }
);
      dialog.dismiss();
    }
  }
);
  dialog.show();
}

Fixed version (ground truth):
private void loadEditDialog(final PathSwitchPreference p){
  int fab_skin=activity.getColorPreference().getColor(ColorUsage.ACCENT);
  LayoutInflater li=LayoutInflater.from(activity);
  final View v=li.inflate(R.layout.dialog_twoedittexts,null);
  ((TextInputLayout)v.findViewById(R.id.text_input1)).setHint(getString(R.string.name));
  ((TextInputLayout)v.findViewById(R.id.text_input2)).setHint(getString(R.string.directory));
  final EditText editText1=((EditText)v.findViewById(R.id.text1)), editText2=((EditText)v.findViewById(R.id.text2));
  editText1.setText(p.getTitle());
  editText2.setText(p.getSummary());
  final MaterialDialog dialog=new MaterialDialog.Builder(getActivity()).title(R.string.edit_shortcut).theme(activity.getAppTheme().getMaterialDialogTheme()).positiveColor(fab_skin).positiveText(getString(R.string.edit).toUpperCase()).negativeColor(fab_skin).negativeText(android.R.string.cancel).customView(v,false).build();
  dialog.getActionButton(DialogAction.POSITIVE).setEnabled(FileUtils.isPathAccessible(editText2.getText().toString(),sharedPrefs));
  disableButtonIfTitleEmpty(editText1,dialog);
  disableButtonIfNotPath(editText2,dialog);
  dialog.getActionButton(DialogAction.POSITIVE).setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View view){
      final String oldName=p.getTitle().toString();
      final String oldPath=p.getSummary().toString();
      dataUtils.removeBook(position.get(p));
      position.remove(p);
      getPreferenceScreen().removePreference(p);
      p.setTitle(editText1.getText());
      p.setSummary(editText2.getText());
      position.put(p,position.size());
      getPreferenceScreen().addPreference(p);
      String[] values=new String[]{editText1.getText().toString(),editText2.getText().toString()};
      dataUtils.addBook(values);
      AppConfig.runInBackground(new Runnable(){
        @Override public void run(){
          utilsHandler.renameBookmark(oldName,oldPath,editText1.getText().toString(),editText2.getText().toString());
        }
      }
);
      dialog.dismiss();
    }
  }
);
  dialog.show();
}