As soon as I put a widget in the sidebar, I get error messages, even on pages that are not supposed to have the widget displayed as set up by the plugin Restrict Widgets.
For each widgets I place in the side bar I receive 2 different messages :
Warning: array_keys() [function.array-keys]: The first argument should be an array in [...]/wp-content/plugins/restrict-widgets/restrict-widgets.php on line 146
Warning: in_array() [function.in-array]: Wrong datatype for second argument in [...]/wp-content/plugins/restrict-widgets/restrict-widgets.php on line 146
I am using WordPress 3.6 in a multisite install with the default theme Twenty Thirtheen.
Please also note, that the problem appeared once in my Firefox (mac), but now I can't see it anymore, but it is still displaying in other browsers (Safari mac, Safari iphone, IE9...).
Thank you for your help!