Please could you check three things for me:
1. That the GD extension for PHP is enabled on the server (see http://php.net/manual/en/book.image.php for details). Most normal installations of PHP should include this library.
2. That the directory where it is trying to save the file is writeable i.e. not read-only. The directory is /wp-content/uploads/easy2map/images/pin_content/