[SOLVED] On quit returns error mirc Script?

This section of code returns unknown command everytime somebody quits.

on 1:QUIT:#By_the_Sea_of_Thassa: {
  if ($read(txt\free.txt,nw,$nick)) {
    /write -dl $+ $readn txt\free.txt
  }
}

Any help in fixing in so when the user quits it removes them from the list would be appriecated.

You can not specify a channel after the on quit event.

So it should be:

on 1:QUIT: {
  if ($read(txt\free.txt,nw,$nick)) {
    write -dl $+ $readn txt\free.txt
  }
}