NuCalendar Problem

Hey, all. I'm trying to set up PHP Nuke on a site I webmaster. No problems with PHP Nuke itself. However, for the first time, I'm setting up a calendar as well. I finally found NuCalendar, which seems to work great. However, when I'm running that module (and that module only), it inserts some weird characters at the very top of the page, above the header and everything. I went through the code, and couldn't find anything that would be doing that.

Any ideas? Anyone else used NuCalendar and experienced anything like this?

Here's the page its happening on:

http://www.okbest.us/modules.php?name=NuCalendar