Need Help with Error

I need some help tracking down an error. I've looked but can't put my finger on what is causing it.

I keep getting the following error at the top of the page.

Notice: Undefined index: listPageOrder in /var/www/sctf/htdocs/cmsAdmin/lib/viewer_functions.php on line 67

I have attached the code for the page to see if someone might be able to find what is generating the error. The page renders fine and the menu works. I just get this error at the top. I have tried to change items in the Sort Order and even removed everything.

Thanks in advance for any help.

P Colvin