Let me start from the beginning.

I tried to export a DMX as per ordinary routine, however, I got this error.

http://i.imgur.com/9mGfGqs.png

I found it odd that Source Tools would suddenly stop working, seeing how there hasn't been a new Blender update as far as I know. I went 'check for updates' on the Source Tools interface, and sure enough, there was a new update. It told me to restart Blender to take effect, and that's what I did.

Upon restarting, every action involving the Source Tools would give the error above.

I thought that perhaps it might've installed incorrectly, so I deleted it and downloaded it manually off the Blender Source Tools site.

And nothing changed. Still getting that error.

Am I missing something or was there a stealth update to Blender just now that made me the sole, early victim?