I originally tried updating my current roster. After doing so (and following instructions), when I tried to access the roster, a blank page would come up.

After a few tries of reverting to my backups and trying to re-upgrade them, as well as trying to use both the full version of the download as well as the no-interface one, I checked my web server logs, and noticed this:

PHP Fatal error: Call to undefined function escapse_array() in C:\\Apache2\\htdocs\\roster\\settings.php on line 153, referer: http://ironsong.gotdns.com:10152/roster/upgrade.php

It would seem that "escape_array" was mispelled, causing the script to stop and not bring up anything. After I corrected the spelling, the roster is working fine.

Just a heads up in case anyone else experiences this issue.

indeed a little typo there in the release

Ah, crap

Re-download the file, it's fixed now