Unknown problem with image sizer keep getting message

Notice: getimagesize() [function.getimagesize]: Read error! in /home/content/11/9081011/html/system/library/image.php on line 11Warning: imagejpeg(): supplied argument is not a valid Image resource in /home/content/11/9081011/html/system/library/image.php on line 44Warning: imagedestroy(): supplied argument is not a valid Image resource in /home/content/11/9081011/html/system/library/image.php on line 51Notice: getimagesize() [function.getimagesize]: Read error! in /home/content/11/9081011/html/system/library/image.php on line 11Warning: imagejpeg(): supplied argument is not a valid Image resource in /home/content/11/9081011/html/system/library/image.php on line 44Warning: imagedestroy(): supplied argument is not a valid Image resource in /home/content/11/9081011/html/system/library/image.php on line 51Notice: getimagesize() [function.getimagesize]: Read error! in /home/content/11/9081011/html/system/library/image.php on line 11Warning: imagejpeg(): supplied argument is not a valid Image resource in /home/content/11/9081011/html/system/library/image.php on line 44Warning: imagedestroy(): supplied argument is not a valid Image resource in /home/content/11/9081011/html/system/library/image.php on line 51Notice: getimagesize() [function.getimagesize]: Read error! in /home/content/11/9081011/html/system/library/image.php on line 11Warning: imagejpeg(): supplied argument is not a valid Image resource in /home/content/11/9081011/html/system/library/image.php on line 44Warning: imagedestroy(): supplied argument is not a valid Image resource in /home/content/11/9081011/html/system/library/image.php on line 51

I'm getting the same error message for the system/library/image.php line 11 but I don't know what I need to fix there!

the solution is here:
http://forum.opencart.com/viewtopic.php?f=20&t=25793