EDIT: It seems like the script I'm using, nbs-irc, is not that compatible with mIRC 7
Glad you got the cause figured out. Many scripts have to be updated at least somewhat for mIRC 7. Khaled did his best to keep compatibility, but Unicode is such a large beast that many scripts still require updating. If you can narrow it down to what part of the script is causing that, someone may be able to help you find a fix (or if the script is still being updated, you can ask them and they may already be working on a fix).
