Chyba pri uploade

Mám menšiu chybu pri uploade. Uploadne súbor a hodí toto
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Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move '/tmp/phpouRFlR' to 'img71a2abc101114ef6f4387e1f664f98efJPG' in /home/*****/public_html/php5upload.class.php on line 101

Tu je celý zdrojak php5upload.class.php
<?php
class imageupload
{
//pblic variables
public $path = '';
public $errorStr = '';
public $imgurl = '';

//private variables
private $_errors = array();
private $_params = array();
private $_lang = array();
private $_maxsize = 1048576;

public $_im_status = false;

//public methods
public function __construct ()
{
require 'config.php';
$this->_types = $types;
$this->_lang = $lang;
$this->_upload_dir = $upload_dir;
$this->_maxsize = $maxsize;

$this->path = $PHP_SELF;

if (is_array($_FILES['__upload']))
{
$this->_params = $_FILES['__upload'];
if (function_exists('exif_imagetype'))
$this->_doSafeUpload();
else
$this->_doUpload();

if (count($this->_errors) > 0)
$this->_errorMsg();
}
}

public function allowTypes ()
{
$str = '';
if (count($this->_types) > 0) {
$str = 'Allowed types: (';
$str .= implode(', ', $this->_types);
$str .= ')';
}

return $str;
}

// private methods
private function _doSafeUpload ()
{
preg_match('/\.([a-zA-Z]+?)$/', $this->_params['name'], $matches);
if (exif_imagetype($this->_params['tmp_name']) && in_array(strtolower($matches[1]), $this->_types))
{
if ($this->_params['size'] > $this->_maxsize)
$this->_errors[] = $this->_lang['E_SIZE'];
else
$this->_im_status = true;

if ($this->_im_status == true)
{
$ext = substr($this->_params['name'], -4);
$this->new_name = md5(time()).$ext;

move_uploaded_file($this->_params['tmp_name'], $this->_upload_dir.$this->new_name);

$this->imgurl = 'http://'.$_SERVER['HTTP_HOST'].preg_replace('/\/([^\/]+?)$/', '/', $_SERVER['PHP_SELF']).$this->_upload_dir.$this->new_name;
}
}
else
$this->_errors[] = $this->_lang['E_TYPE'];
}

private function _doUpload ()
{
preg_match('/\.([a-zA-Z]+?)$/', $this->_params['name'], $matches);
if(in_array(strtolower($matches[1]), $this->_types))
{
if ($this->_params['size'] > $this->_maxsize)
$this->_errors[] = $this->_lang['E_SIZE'];
else
$this->_im_status = true;

if ($this->_im_status == true)
{
$ext = substr($this->_params['name'], -3);
$this->new_name = md5(time()).$ext;

move_uploaded_file($this->_params['tmp_name'], $this->_upload_dir.$this->new_name);

$this->imgurl = 'http://'.$_SERVER['HTTP_HOST'].preg_replace('/\/([^\/]+?)$/', '/', $_SERVER['PHP_SELF']).$this->_upload_dir.'/'.$this->new_name;
}
}
else
$this->_errors[] = $this->_lang['E_TYPE'];
}

function _errorMsg()
{
$this->errorStr = implode('<br />', $this->_errors);
}
}

?>