Error in the admin

Hi there

Promising plugin thanks, but I get the following errors when in the admin:
Warning: in_array() expects parameter 2 to be array, boolean given in….plugins/reorder-entry-images/class-reorder-entry-images.php on line 177

and

Warning: in_array() expects parameter 2 to be array, boolean given in ….plugins/reorder-entry-images/class-reorder-entry-images.php on line 193

Hope you can fix it please.
Thanks

http://ww.wp.xz.cn/plugins/reorder-entry-images/