Actually you can remove the $decode part of the code...I thought your network had the %# channel types. I forgot to edit it. Even without it, the $+(.timer,$regml(1)) 0 $2 quotes # was supposed to work as it should. I just don't see why it fails to work for you while it works for me and other people, including Dark|.

Anyway, the reason you received "Identifier locked" message is that you have that optioned locked currently.

To unlock it, go to mirc options, expand Other, select Lock, under Disable Commands, uncheck Decode, and then Ok to save. After that, try to run the script again.