On *:CONNECT: { nick $nickname $+ $rand(1,5) }
alias Nickname1 { Lala }
alias Nickname2 { Lela }
alias Nickname3 { Lila }
alias Nickname4 { Lola }
alias Nickname5 { Lula }
Erroneus Nickname.
* Lela sets mode: +ixn * Your nick is now Lela - Lola No such nick
problem in mIRC options ?
That is because you connect with nick Lola and the server starts sending messages to you. Then after a few seconds you change your nick and the server can't find Lola anymore.
EDIT: You can also change your nick at ON *:START: to avoid this "problem".