Program: 20126
Project: 20126
Buggy source:
@Override protected void done(){
  if (epubcheckResult == false) {
    gui.setBorderStateError();
    gui.addLogMessageToTextLog("String_Node_Str" + "String_Node_Str");
    if (report.getErrorCount() > 0 && report.getWarningCount() > 0) {
      resultMessage=String.format(__("String_Node_Str"),report.getWarningCount(),report.getErrorCount());
    }
 else     if (report.getErrorCount() > 0) {
      resultMessage=String.format(__("String_Node_Str"),report.getErrorCount());
    }
 else     if (report.getWarningCount() > 0) {
      gui.setBorderStateWarning();
      resultMessage=String.format(__("String_Node_Str"),report.getWarningCount());
    }
 else {
      resultMessage=__("String_Node_Str");
    }
    gui.addLogMessage("String_Node_Str" + resultMessage + "String_Node_Str");
    if (guiManager.getMacApp() != null) {
      if (report.getWarningCount() + report.getErrorCount() > 0) {
        guiManager.getMacApp().setDockIconBadge(new Integer(report.getWarningCount() + report.getErrorCount()).toString());
      }
 else {
        guiManager.getMacApp().setDockIconBadge("String_Node_Str");
      }
    }
    if (guiManager.getExpandedSave() == ExpandedSaveMode.ALWAYS) {
      saveEpubFromExpandedFolder();
    }
 else {
      if (expanded && epubFile.exists()) {
        epubFile.delete();
        gui.addLogMessage(Severity.WARNING,"String_Node_Str" + __("String_Node_Str") + "String_Node_Str");
      }
    }
  }
 else {
    gui.setBorderStateValid();
    resultMessage=__("String_Node_Str");
    gui.addLogMessage("String_Node_Str" + resultMessage + "String_Node_Str");
    if (guiManager.getMacApp() != null) {
      guiManager.getMacApp().setDockIconBadge("String_Node_Str");
    }
    if (guiManager.getExpandedSave() != ExpandedSaveMode.NEVER) {
      saveEpubFromExpandedFolder();
    }
  }
  gui.scrollToBottom();
  timestamp_end=System.currentTimeMillis();
  double timestamp_diff=timestamp_end - timestamp_begin;
  DecimalFormat df=new DecimalFormat("String_Node_Str");
  String timestamp_result=df.format(timestamp_diff / 1000);
  gui.getStatusBar().update(null,__("String_Node_Str") + "String_Node_Str" + String.format(__("String_Node_Str"),timestamp_result)+ "String_Node_Str"+ resultMessage);
  gui.enableButtonsAfterValidation();
  if (guiManager.getMenuOptionAutoSaveLogfile()) {
    if (expanded && expandedBasedir != null && expandedBasedir.exists()) {
      gui.saveLogfile(new File(expandedBasedir,epubFile.getName().replaceAll(epubFileExtRegex,"String_Node_Str")));
    }
 else {
      gui.saveLogfile(new File(epubFile.getAbsolutePath().replaceAll(epubFileExtRegex,"String_Node_Str")));
    }
  }
}

Fixed version (ground truth):
@Override protected void done(){
  if (epubcheckResult == false) {
    gui.setBorderStateError();
    gui.addLogMessageToTextLog("String_Node_Str" + "String_Node_Str");
    if (report.getErrorCount() > 0 && report.getWarningCount() > 0) {
      resultMessage=String.format(__("String_Node_Str"),report.getWarningCount(),report.getErrorCount());
    }
 else     if (report.getErrorCount() > 0) {
      resultMessage=String.format(__("String_Node_Str"),report.getErrorCount());
    }
 else     if (report.getWarningCount() > 0) {
      gui.setBorderStateWarning();
      resultMessage=String.format(__("String_Node_Str"),report.getWarningCount());
    }
 else {
      resultMessage=__("String_Node_Str");
    }
    gui.addLogMessage("String_Node_Str" + resultMessage + "String_Node_Str");
    if (guiManager.getMacApp() != null) {
      if (report.getWarningCount() + report.getErrorCount() > 0) {
        guiManager.getMacApp().setDockIconBadge(new Integer(report.getWarningCount() + report.getErrorCount()).toString());
      }
 else {
        guiManager.getMacApp().setDockIconBadge("String_Node_Str");
      }
    }
    if (expanded) {
      if (guiManager.getExpandedSave() == ExpandedSaveMode.ALWAYS) {
        saveEpubFromExpandedFolder();
      }
 else       if (epubFile.exists()) {
        epubFile.delete();
        gui.addLogMessage(Severity.WARNING,"String_Node_Str" + __("String_Node_Str") + "String_Node_Str");
      }
    }
  }
 else {
    gui.setBorderStateValid();
    resultMessage=__("String_Node_Str");
    gui.addLogMessage("String_Node_Str" + resultMessage + "String_Node_Str");
    if (guiManager.getMacApp() != null) {
      guiManager.getMacApp().setDockIconBadge("String_Node_Str");
    }
    if (expanded && guiManager.getExpandedSave() != ExpandedSaveMode.NEVER) {
      saveEpubFromExpandedFolder();
    }
  }
  gui.scrollToBottom();
  timestamp_end=System.currentTimeMillis();
  double timestamp_diff=timestamp_end - timestamp_begin;
  DecimalFormat df=new DecimalFormat("String_Node_Str");
  String timestamp_result=df.format(timestamp_diff / 1000);
  gui.getStatusBar().update(null,__("String_Node_Str") + "String_Node_Str" + String.format(__("String_Node_Str"),timestamp_result)+ "String_Node_Str"+ resultMessage);
  gui.enableButtonsAfterValidation();
  if (guiManager.getMenuOptionAutoSaveLogfile()) {
    if (expanded && expandedBasedir != null && expandedBasedir.exists()) {
      gui.saveLogfile(new File(expandedBasedir,epubFile.getName().replaceAll(epubFileExtRegex,"String_Node_Str")));
    }
 else {
      gui.saveLogfile(new File(epubFile.getAbsolutePath().replaceAll(epubFileExtRegex,"String_Node_Str")));
    }
  }
  gui.scrollToBottom();
}