Problem with page drop down menu.

I am going through my members admin area and cleaning out old members that never posted.  I have about 30 pages of members to go through. At the bottom of each page is a drop down to choose which page to go to.  Everytime I try to use this drop down I get an error in IE that say "Done with errors" and it never takes me to the page. I searched this forum and only found a reference to the includes/header.asp file. I compared my file to the original and it looks fine. Is there anything else I should be checking?