Still curious about the special characters thing here, it's also affecting my roster on the site itself saying the character doesn't exist when I upload using the guildraidsnapshot.lua upload method.
It's been over a week and my post keeps going farther and farther down the list....
Thanks in advance!
I suspect that the characters on your site are currently encoded with ASCII, while they should be encoded with UTF-8 (and that's what WoW expects them to be).
I recommend running the GRSS Roster Uploader and importing that into the site.
If that doesn't fix it, try heading to Admin > Characters, and modifying the characters with the special characters. Just load the characters and press "Save." If I'm right, that should correct the encodings.
Let me know how that goes.