bp-help on "[Plugin: BP Sticky Groups] Plugin error on activation"

Hi @imath,
Thanks for the plugin. I am having and issue that I want to report:
Warning: Creating default object from empty value in C:\xampp\htdocs\my-site\wp-content\plugins\bp-sticky-groups\bp-sticky-groups.php on line 558
I have PHP 5.4.16 installed and removed the error by adding:
error_reporting(E_ERROR);
To line 16 of bp-sticky-groups.php.
The plugin works great after that! Thanks!

http://wordpress.org/plugins/bp-sticky-groups/