iis error implode

Wp in IIS7
When trying to access the widgets panel (http://www.example.com/wp-admin/widgets.php) I get the following error:

PHP Warning: implode() [function.implode]: Invalid arguments passed in D:\webdir\www.example.com\Html\wp-content\plugins\widgets-controller\widgets_controller.php on line 115

Solution

Make sure that $instance['xxxxx'] is an array. When none of the options is selected, then there is NO such thing as $instance['xxxxx']!!!

if( is_array($instance['xxxxx']) )
{
  $xxxxx = implode(",", $instance['xxxxx']);
}

example

if( is_array($instance['posts']) )
{
  $temposts = implode(",", $instance['posts']);
}

and replacing

current_posts="<?php echo implode("," , $instance['posts']); ?>"
for
current_posts="<?php echo $temposts; ?>"

http://wordpress.org/extend/plugins/widgets-controller/