If you add it directly to the scripts editor via ALT+R and then press "OK" it will come up with that warning dialog. As before, press "Yes". There is no need to use //load, and it should put it in a .mrc file, not .ini.
Really you can then just type /exit and leave mIRC, however, whilst I was testing the code (and it worked) I just type //run mirc.exe and opened a new client - it should work, at least it did for me.
Regards,
