[Plugin: Simple Donate] Warning: Invalid Arguement

I upgraded WP to version 3.3.1 and now there is a Warning message on the page where the shortcode is:

Warning: Invalid argument supplied for foreach() in /home/directory_path_removed_for_privacy/wp-content/plugins/simple-donate/index.php on line 229

I’m not sure how to fix this, please help?

Thanks!

https://www.ads-software.com/extend/plugins/simple-donate/