Author Page Randomly Lacks Bio Info! Please help!

I have created an author.php that normally shows the author’s biographical information and their website followed by every post they have wrote. This is accessed by clicking on their name on the normal blog.

I think the problem lies in some of the contributors using a space in their username?

Please check it out. I am have problems with the Contributor “Maher Maso”

http://www.FriscoPolitico.com/index.php