Warning:array_slice() message

Hi,

I am getting this message all of a sudden, I havent changed anything so don’t know why:

Warning: array_slice() expects parameter 1 to be array, null given in /home/content/02/11005502/html/wordpress/wp-content/plugins/easy-instagram/index.php on line 416

What does it mean?

Thanks,
Chantal

http://wordpress.org/extend/plugins/easy-instagram/