Yes, that means there's white space before your <?php tag somewhere in your code. When you attempt to modify the headers (They communicate to your browser what page they're loading and what to load) after the page has begun loading, you cannot modify them since they've already been sent. Luckily this is an easy error to fix.

My best recommendation is to go and open /tracking/202-account/administration.php and look at the top of the file. Highlight everything before the first <?php tag, if there's any white space just delete it. If that doesn't fix the problem it's going to be a bit trickier to find, but essentially you just have to find everything on that page that is being loaded and find any type of html or white space output before the header() function is called.

If you try this and it doesn't work let me know and I can help you fix it, I use Prosper a lot and they don't have the best code in some places lol.

I'm still running into the issue and the line being pointed out in template.php is
<?php echo $title;?>

And the line for administration.php
header('location: /202-account/administration.php');

I removed that line completely then tried again, and the error gave this line in template.php

<meta name="MSSmartTagsPreventParsing" content="TRUE"/>

Anyone else can help with this?