There is currently an vulnerability circulating for mIRC, it means that people can cause all versions of mIRC to crash at will. To protect yourself from this add "/ignore -wd *" without the "s to your perform. For more information check http://www.irchelp.org/irchelp/mirc/exploit.html
If you cant update cause of a script not working with mIRC 6.12 then do the ignore temp fix in the quote but otherwise update to 6.12 asap.
Unvalued customer since 2001 funding cheap internet for others / DSL/Fibre house move 24 month regrade from 8th May 2017