Hey, beautiful plug-in! Thanks for taking the time to make this available! Hopefully, it'll keep the spammers from spending so much time on my Blog... Keep up the great work!
For those with font issues, try copying a font you want to use into the crypt/fonts/ directory. Then make sure you're using the proper filename for the font. I used Courier New which was COUR.TTF. Make sure you pay attention to the case :)