Business Feature Theme: bp_loggedin_user_id Error

I get the following error when trying to look at a post in the Business Feature Theme and 7 other themes!

Fatal error: Call to undefined function bp_loggedin_user_id() in /usr/local/www/wp-content/themes/business-feature/comments.php on line 77

Also in these themes:
bp-business
bp-magazine
business-portfolio
business-blog
business-services
product
studio

Please advise. I running WP Multi-site 3.01

David