Although this is not an error and therefore does not break the plugin, I would like to bring the matter to attention anyway.
When the plugin is active, the following lines are displayed:
Warning: fopen() [function.fopen]: Filename cannot be empty in /usr/share/wordpress/wp-includes/functions.php on line 3296
Warning: fread() expects parameter 1 to be resource, boolean given in /usr/share/wordpress/wp-includes/functions.php on line 3299
Warning: fclose() expects parameter 1 to be resource, boolean given in /usr/share/wordpress/wp-includes/functions.php on line 3302
