Code Error when using Nelo home page settings

We are busy building a big content site with child blogs. The main Blog theme is set to Nelo and to keep thing uniform we will be using the nelo theme sitewide.

The Nelo homepage sittings for the child blogs is set to "blog homepage" but when viewing the front page of the blog I get this error at the bottom of the first post:

Fatal error: Only variables can be passed by reference in /home/myza/public_html/wp-content/themes/wpmu-nelo/functions.php on line 16

You can view the error here

I have attached 2 files:
1: The theme settings I used
2: The error on the page.