Program: 3109
Project: 3109
Buggy source:
public boolean list(CommandSender player,String[] s){
  int pagesize=9;
  int page=0;
  if (!BSutils.hasPermission(player,"String_Node_Str",true)) {
    return true;
  }
  try {
    page=(s.length == 0) ? 1 : Integer.parseInt(s[0]);
  }
 catch (  Exception e) {
    BSutils.sendMessage(player,"String_Node_Str");
    return false;
  }
  int pages=(int)Math.ceil((double)PriceList.NameMap.size() / pagesize);
  String listhead=BetterShop.configfile.getString("String_Node_Str").replace("String_Node_Str",String.valueOf(page)).replace("String_Node_Str",String.valueOf(pages));
  if ((s.length != 0) && (s.length != 1)) {
    return false;
  }
 else   if (page > pages) {
    BSutils.sendMessage(player,"String_Node_Str" + page + "String_Node_Str");
    return true;
  }
 else {
    int linenum=1;
    Iterator<Double> iter=PriceList.ItemMap.iterator();
    BSutils.sendMessage(player,String.format(listhead,page,pages));
    while ((linenum < (page - 1) * pagesize) && iter.hasNext()) {
      iter.next();
      linenum++;
    }
    while ((linenum < page * pagesize) && (iter.hasNext())) {
      Double i=iter.next();
      try {
        String sellStr=(PriceList.getSellPrice(i) <= 0) ? "String_Node_Str" : String.format("String_Node_Str",PriceList.getSellPrice(i));
        String buyStr=(PriceList.getBuyPrice(i) < 0) ? "String_Node_Str" : String.format("String_Node_Str",PriceList.getBuyPrice(i));
        BSutils.sendMessage(player,String.format("String_Node_Str",itemDb.getName(i),PriceList.getBuyPrice(i),buyStr,sellStr));
      }
 catch (      Exception e) {
        e.printStackTrace();
      }
      linenum++;
    }
    BSutils.sendMessage(player,BetterShop.configfile.getString("String_Node_Str"));
    return true;
  }
}

Fixed version (ground truth):
public boolean list(CommandSender player,String[] s){
  int pagesize=9;
  int page=0;
  if (!BSutils.hasPermission(player,"String_Node_Str",true)) {
    return true;
  }
  try {
    page=(s.length == 0) ? 1 : Integer.parseInt(s[0]);
  }
 catch (  Exception e) {
    BSutils.sendMessage(player,"String_Node_Str");
    return false;
  }
  int pages=(int)Math.ceil((double)PriceList.NameMap.size() / pagesize);
  String listhead=BetterShop.configfile.getString("String_Node_Str").replace("String_Node_Str",String.valueOf(page)).replace("String_Node_Str",String.valueOf(pages));
  if ((s.length != 0) && (s.length != 1)) {
    return false;
  }
 else   if (page > pages) {
    BSutils.sendMessage(player,"String_Node_Str" + page + "String_Node_Str");
    return true;
  }
 else {
    int linenum=1;
    Iterator<Double> iter=PriceList.ItemMap.iterator();
    BSutils.sendMessage(player,String.format(listhead,page,pages));
    while ((linenum < (page - 1) * pagesize) && iter.hasNext()) {
      iter.next();
      linenum++;
    }
    while ((linenum < page * pagesize) && (iter.hasNext())) {
      Double i=iter.next();
      try {
        String sellStr=(PriceList.getSellPrice(i) <= 0) ? "String_Node_Str" : String.format("String_Node_Str",PriceList.getSellPrice(i));
        String buyStr=(PriceList.getBuyPrice(i) < 0) ? "String_Node_Str" : String.format("String_Node_Str",PriceList.getBuyPrice(i));
        BSutils.sendMessage(player,String.format(BetterShop.configfile.getString("String_Node_Str").replace("String_Node_Str","String_Node_Str").replace("String_Node_Str","String_Node_Str").replace("String_Node_Str","String_Node_Str"),itemDb.getName(i),buyStr,sellStr));
      }
 catch (      Exception e) {
        e.printStackTrace();
      }
      linenum++;
    }
    BSutils.sendMessage(player,BetterShop.configfile.getString("String_Node_Str"));
    return true;
  }
}