PHP Catchable fatal error: Object of class JFeedLink could not be converted to string

i get the following error using Joomla 3.0.1-0 stack from bitnami for windows:

PHP Catchable fatal error: Object of class JFeedLink could not be converted to string in C:\\Program Files\\BitNami Joomla 3.0.1-0 Stack\\apps\\joomla\\htdocs\\modules\\mod_feed\\tmpl\\default.php on line 65