Thanks for the feed back woodall. What browser are you using, and what did you do to achieve those errors. I have accessed the page, and all the tabs logged in and out in chrome, firefox and did not get those errors.
I forgot where the errors came from, but the originated at: http://www.collabrr.com/statistics.php. Try this string: ?user='
Go back and check those files/lines and make sure there are no blank lines or ";" being left out. I can't really tell you much about the problem without seeing the code. Hope that helps!