Blogs mu pages has a box I can't get rid of

I am using Blogs-mu for my BuddyPress Multisite website. I am attaching an image from the interior pages - not the home page. On these pages I get a rectangular empty box above the left sidebar. I do not know what is causing this. When I click on the empty box it takes me back to the home page.

I have done the following to try and figure out what is causing this:

Removed the Facebook and Twitter icons - makes no difference
Disabled plugins as is always suggested - makes no difference
Put text in the "Network sub intro post text." The text displayed normally and has no effect on the blank box

I would like to know what I can do to get rid of this. Thanks.