Fatal error on Sub Blogs

Hi,

I downloaded a bunch of plugins and everything was working, then I figured out how to use the custom Menu option on the dashboard and going to check my subblog sites, I get this message when I go to a sub site:

Fatal error: Call to a member function get_feed_permastruct() on a non-object in /home/jyangsammataro/microinvestmentinitiative.org/wp-includes/link-template.php on line 429

The main site is https://www.microinvestmentinitiative.org
the subsites are https://www.microinvestmentinitiative.org/stanford
and https://www.microinvestmentinitiative.org/sidwell

Thanks for the help in advance!