0.56 Warning in array ()

Can someone please help with the following error?

Warning: in_array() [function.in-array]: Wrong datatype for second argument in /home/hostname/public_html/wp-content/plugins/widget-logic/widget_logic.php(284) : eval()’d code on line 1

Thanks!

http://ww.wp.xz.cn/extend/plugins/widget-logic/