I get the same as Ashkrynt. Try a complete clean install of mIRC without any remote files etc etc. If it's still affecting you, send as much information as you can to Khaled@mirc.com and/or Tjerk@mirc.com.
As an added note, I am receiving the same message as Ashkrynt when someone tried to exploit my mIRC.
You know what's really strange? I use 6.03 and I was in queue to download something from a bot last night. Someone tried the exploit and I got the invalid parameter message. What's up with that?
That's the tricky part. The message 6.12 gives is a message that has always existed. I have had it several times in the past. Shame, you can't tell if someome's deliberately doing this, or if it has another cause.
DALnet #Helpdesk I hear and I forget. I see and I remember. I do and I understand. -Confucius