Fatal error on Drupal 6.16 install

I'm running 6.16 myself, and I can't see anything wrong with the code on that line.
It's likely related to your system somehow (or a lot of people would have complained loudly)
This could be an issue with your specific php, version, webserver, an installed module, etc.

Two things you definitely should try before you proceed with my initial suggestion is:
1) Log in the log if you can access it: www.yourdomain.com/admin/reports/dblog
2) Disable all non-core modules
3) If acceptable to you, drop the database and try re-installing, it's likely gonna be easier for you.
4) Otherwise, try this:

What you need to do is open up the file in the error message with an editor, nano is a simple one from the command-line (but I prefer vim), or maybe gedit/kate if you have a GUI.
Scroll down to line 1426, and move a few lines up, until you are just below "function url(xxx) {" and type
paste my code above there. It should look like this:
function url($path = NULL, $options = array()) {
print_r($options);
// Merge in defaults.
$options += array(

The reload the faulty page, and hope that you get some text output before the fatal error, post it here.