This has to do with a change made in 7.33.

You will have to prefix the commands within those aliases with '!'. For example, /msg would become /!msg inside a 'msg' alias, and /query would become /!query inside a 'query' alias. This essentially forces mIRC to check for a built-in command by that name, and if none is found I believe it sends the command directly to the server.

Your code will likely need to be changed to resemble something like this:
Code:
alias query {
  ;The '!' command prefix was not previously required inside an alias of the same name
  !query $1-
}


I hope that helps.

edit: link above

Last edited by Yawhatnever; 27/06/14 06:01 PM. Reason: .33 not .34