title: PHPthumbFactory file not found on upload
body: <p>library: <a href="https://github.com/masterexploder/PHPThumb/wiki/Basic-Usage" rel="nofollow noreferrer">https://github.com/masterexploder/PHPThumb/wiki/Basic-Usage</a></p>
  
  <p>i am using the PhpThumbFactory library to crop and upload an image. the error im receiving is this:</p>
  
  <pre><code>Fatal error: Uncaught exception 'Exception' with message 'Image file not found: ' in /www/iaddesign/admin/classes/phpthumb/ThumbBase.inc.php:193 
  Stack trace: 
  #0 /www/iaddesign/admin/classes/phpthumb/ThumbBase.inc.php(172): ThumbBase-&gt;triggerError('Image file not ...') 
  #1 /www/iaddesign/admin/classes/phpthumb/ThumbBase.inc.php(110): ThumbBase-&gt;fileExistsAndReadable() 
  #2 /www/iaddesign/admin/classes/phpthumb/GdThumb.inc.php(96): ThumbBase-&gt;__construct('', false) 
  #3 /www/iaddesign/admin/classes/phpthumb/ThumbLib.inc.php(127): GdThumb-&gt;__construct('', Array, false) 
  #4 /www/iaddesign/admin/portfolio.php(29): PhpThumbFactory::create('') 
  #5 {main} thrown in /www/iaddesign/admin/classes/phpthumb/ThumbBase.inc.php on line 193
  </code></pre>
  
  <p>here is the snippet that is for the image to be uploaded.</p>
  
  <pre><code>/* -------------------------------------------------------------------- */
  /*                        SAVE ICONS                                    */
  /* -------------------------------------------------------------------- */
  
  $icononsrc = $_FILES['iconoff']['tmp_name'];
  $iconoffsrc = $_FILES['iconon']['tmp_name'];
  
  $thumboff = PhpThumbFactory::create($iconoffsrc);
  $thumbon = PhpThumbFactory::create($icononsrc);
  
  $thumboff-&gt;adaptiveResize(200,151);
  $thumbon-&gt;adaptiveResize(200,151);
  
  $thumboffname = "uploads/".$_FILES['iconoff']['name'];
  $thumbonname = "uploads/".$_FILES['iconon']['name'];
  
  $thumboff-&gt;save($thumboffname, 'jpg');
  $thumbon-&gt;save($thumbonname, 'jpg');
  </code></pre>