Error with PEAR's library Net_Traceroute

[eluser]Unknown[/eluser]
Hi guys, i am building an application that will traceroute a host and display the data on googlemap. I am currently using pear's traceroute library. Able to run the traceroute() command but it seems to throw me one error.

A PHP Error was encountered
Severity: Notice

Message: Undefined offset: 5

Filename: Net/Traceroute.php

Line Number: 531

Traceroute.php is the library class i called. It seems like it has a problem with the array associated to line 531. I can't seem to find the problem.

Below is the code of the library class

Code:

function _parseResultwindows()
    {
        $raw_data_len = count($this->_raw_data);
        $dataRow = 0;

        while (empty($this->_raw_data[$dataRow]) && ($dataRow<$raw_data_len)) {
            $dataRow++;
        }

        $tempparts = explode(' ', $this->_raw_data[$dataRow]);
        $searchIdx = 0;
        while (($searchIdx < count($tempparts)) && (substr($tempparts[$searchIdx], 0, 1) != '[')) {
            $searchIdx++;
        }
        $this->_target_ip = trim($tempparts[$searchIdx], ' [],');
        while (($searchIdx < count($tempparts)) && ((int) $tempparts[$searchIdx] <= 0)) {
            $searchIdx++;
        }
        if ((int) $tempparts[$searchIdx] > 0) {

This is Line 531------^ "if ((int) $tempparts[$searchIdx] > 0) {"

Code:

$this->_ttl = (int) $tempparts[$searchIdx]; // TTL might be written in next line; e.g. on Windows 98
        } elseif (!empty($this->_raw_data[$dataRow+1])) {
            $dataRow++;
            $tempparts  = explode(' ', $this->_raw_data[$dataRow]);
            $searchIdx = 0;
            while (($searchIdx < count($tempparts)) && ((int) $tempparts[$searchIdx] <= 0)) {
                $searchIdx++;
            }

In my controller, this is how i call the traceroute() function:

Code:

$host = $this->input->post('ip_text');
         $this->load->library('pearloader');
        $tr=$this->pearloader->load('Net_Traceroute',"", "WANXING");
         $tr = Net_Traceroute::factory();
         if(!PEAR::isError($tr)) {
      // trace route to host and get response
              $response = $tr->traceroute($host);
      // print response
              echo $response->getRawData();
        }

Everything is displaying correctly just that the error keep popping out. Any help will be deeply appreciated. I am using the lastest release of Traceroute package from PEAR--> version 0.21.3

[eluser]Unknown[/eluser]
Anyone?