[Plugin: Blog-in-Blog] unclosed tag appears in header

Hi there,
Excellent plugin! It has allowed me to make my website far more versatile.
Just one thing I am trying to fix: an unclosed tag “more »” /> ” appears in the top left corner of the header
How can I remove that? It only affects pages that I have set to be full page width.
Thanks in advance,
Helen

http://wordpress.org/extend/plugins/blog-in-blog/