Program: 88729
Project: 88729
Buggy source:
public void actionPerformed(ActionEvent e){
  GUILog gl=Application.getInstance().getGUILog();
  try {
    String response=null;
    Boolean recurse=Utils.getUserYesNoAnswer("String_Node_Str");
    if (recurse == null)     return;
    DocumentValidator dv=new DocumentValidator(doc);
    dv.validateDocument();
    if (dv.isFatal()) {
      dv.printErrors();
      return;
    }
    DocumentGenerator dg=new DocumentGenerator(doc,dv,null);
    Document dge=dg.parseDocument(true,recurse);
    dv.printErrors();
    ViewCommentVisitor vcv=new ViewCommentVisitor();
    dge.accept(vcv);
    String json=vcv.getJSON();
    String url=ViewEditUtils.getUrl();
    if (url == null)     return;
    url+="String_Node_Str" + doc.getID() + "String_Node_Str";
    if (recurse) {
      url+="String_Node_Str";
    }
    gl.log("String_Node_Str");
    PostMethod pm=new PostMethod(url);
    try {
      gl.log("String_Node_Str");
      pm.setRequestHeader("String_Node_Str","String_Node_Str");
      pm.setRequestEntity(JsonRequestEntity.create(json));
      HttpClient client=new HttpClient();
      ViewEditUtils.setCredentials(client);
      client.executeMethod(pm);
      response=pm.getResponseBodyAsString();
      if (response.equals("String_Node_Str"))       gl.log("String_Node_Str");
 else       if (response.equals("String_Node_Str"))       gl.log("String_Node_Str");
 else       gl.log(response);
    }
  finally {
      pm.releaseConnection();
    }
  }
 catch (  Exception ex) {
    StringWriter sw=new StringWriter();
    PrintWriter pw=new PrintWriter(sw);
    ex.printStackTrace(pw);
    gl.log(sw.toString());
    ex.printStackTrace();
  }
}

Fixed version (ground truth):
public void actionPerformed(ActionEvent e){
  GUILog gl=Application.getInstance().getGUILog();
  DocumentValidator dv=null;
  try {
    String response=null;
    Boolean recurse=Utils.getUserYesNoAnswer("String_Node_Str");
    if (recurse == null)     return;
    dv=new DocumentValidator(doc);
    dv.validateDocument();
    if (dv.isFatal()) {
      dv.printErrors();
      return;
    }
    DocumentGenerator dg=new DocumentGenerator(doc,dv,null);
    Document dge=dg.parseDocument(true,recurse);
    ViewCommentVisitor vcv=new ViewCommentVisitor();
    dge.accept(vcv);
    String json=vcv.getJSON();
    String url=ViewEditUtils.getUrl();
    if (url == null) {
      dv.printErrors();
      return;
    }
    url+="String_Node_Str" + doc.getID() + "String_Node_Str";
    if (recurse) {
      url+="String_Node_Str";
    }
    gl.log("String_Node_Str");
    PostMethod pm=new PostMethod(url);
    try {
      gl.log("String_Node_Str");
      pm.setRequestHeader("String_Node_Str","String_Node_Str");
      pm.setRequestEntity(JsonRequestEntity.create(json));
      HttpClient client=new HttpClient();
      ViewEditUtils.setCredentials(client);
      client.executeMethod(pm);
      response=pm.getResponseBodyAsString();
      if (response.equals("String_Node_Str"))       gl.log("String_Node_Str");
 else       if (response.equals("String_Node_Str"))       gl.log("String_Node_Str");
 else       gl.log(response);
    }
  finally {
      pm.releaseConnection();
    }
  }
 catch (  Exception ex) {
    StringWriter sw=new StringWriter();
    PrintWriter pw=new PrintWriter(sw);
    ex.printStackTrace(pw);
    gl.log(sw.toString());
    ex.printStackTrace();
  }
  if (dv != null)   dv.printErrors();
}