Program: 58192
Project: 58192
Buggy source:
@Override public boolean execute(Player plr,String... args){
  PlotWorld plotworld=PlotMain.getWorldSettings(plr.getWorld());
  if (args.length > 0 && args[0].equalsIgnoreCase("String_Node_Str")) {
    StringBuilder msg=new StringBuilder();
    for (    C c : C.values()) {
      msg.append(c.s() + "String_Node_Str");
    }
    PlayerFunctions.sendMessage(plr,msg.toString());
    return true;
  }
  StringBuilder information;
  String header, line, section;
{
    information=new StringBuilder();
    header=C.DEUBG_HEADER.s();
    line=C.DEBUG_LINE.s();
    section=C.DEBUG_SECTION.s();
  }
{
    StringBuilder worlds=new StringBuilder("String_Node_Str");
    for (    World world : PlotMain.getPlotWorlds())     worlds.append(world.getName() + "String_Node_Str");
    information.append(header);
    information.append(getSection(section,"String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",Lag.getTPS()));
    information.append(getLine(line,"String_Node_Str",(int)Lag.getPercentage() + "String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",(int)Lag.getFullPercentage() + "String_Node_Str"));
    information.append(getSection(section,"String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",worlds));
    information.append(getLine(line,"String_Node_Str",PlotMain.getPlots().size()));
    information.append(getLine(line,"String_Node_Str",PlotHelper.getWorldFolderSize() + "String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",PlotHelper.getEntities(plr.getWorld())));
    information.append(getLine(line,"String_Node_Str",PlotHelper.getTileEntities(plr.getWorld())));
    information.append(getLine(line,"String_Node_Str",PlotHelper.getLoadedChunks(plr.getWorld())));
    information.append(getSection(section,"String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",RUtils.getFreeRam() + "String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",RUtils.getTotalRam() + "String_Node_Str"));
    information.append(getSection(section,"String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",C.values().length));
    information.append(getLine(line,"String_Node_Str","String_Node_Str"));
  }
{
    PlayerFunctions.sendMessage(plr,information.toString());
  }
  return true;
}

Fixed version (ground truth):
@Override public boolean execute(Player plr,String... args){
  PlotWorld plotworld=PlotMain.getWorldSettings(plr.getWorld());
  if (args.length > 0 && args[0].equalsIgnoreCase("String_Node_Str")) {
    StringBuilder msg=new StringBuilder();
    for (    C c : C.values()) {
      msg.append(c.s() + "String_Node_Str");
    }
    PlayerFunctions.sendMessage(plr,msg.toString());
    return true;
  }
  StringBuilder information;
  String header, line, section;
{
    information=new StringBuilder();
    header=C.DEUBG_HEADER.s();
    line=C.DEBUG_LINE.s();
    section=C.DEBUG_SECTION.s();
  }
{
    StringBuilder worlds=new StringBuilder("String_Node_Str");
    for (    String world : PlotMain.getPlotWorlds())     worlds.append(world + "String_Node_Str");
    information.append(header);
    information.append(getSection(section,"String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",Lag.getTPS()));
    information.append(getLine(line,"String_Node_Str",(int)Lag.getPercentage() + "String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",(int)Lag.getFullPercentage() + "String_Node_Str"));
    information.append(getSection(section,"String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",worlds));
    information.append(getLine(line,"String_Node_Str",PlotMain.getPlots().size()));
    information.append(getLine(line,"String_Node_Str",PlotHelper.getWorldFolderSize() + "String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",PlotHelper.getEntities(plr.getWorld())));
    information.append(getLine(line,"String_Node_Str",PlotHelper.getTileEntities(plr.getWorld())));
    information.append(getLine(line,"String_Node_Str",PlotHelper.getLoadedChunks(plr.getWorld())));
    information.append(getSection(section,"String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",RUtils.getFreeRam() + "String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",RUtils.getTotalRam() + "String_Node_Str"));
    information.append(getSection(section,"String_Node_Str"));
    information.append(getLine(line,"String_Node_Str",C.values().length));
    information.append(getLine(line,"String_Node_Str","String_Node_Str"));
  }
{
    PlayerFunctions.sendMessage(plr,information.toString());
  }
  return true;
}