i dont know if it is a bug or a numeric conflict, i know numeric 489 as:

489 ERR_VOICENEEDED
<source> 489 <target> <channel> :You're neither voiced nor channel operator
returned when using the CNOTICE or CPRIVMSG command and you are not opped or voiced on the specified channel
from ircu / asuka source (undernet / quakenet)

when i use 'CNOTICE nick #channel :message' i get the following
in debug:
online2.no.quakenet.org cnotice nick #channel :.
online2.no.quakenet.org 489 wiebe #channel :You're neither voiced nor channel operator

in the channel / status window
* Unable to join channel (not using secure connection)

im using mirc 6.15

*sigh*

its being sent by the server. mIRC just displays the msgs, it doesn't do anything with it so its a problem/bug/feck up with the ircd.

If the server sends 489 wiebe #channel :You're neither voiced nor channel operator and then mIRC displays * Unable to join channel (not using secure connection) then that's a bug in mIRC.

Or a poorly written script.

yes but keep in mind that looks like the standard mIRC message, no script will replace the standard message with a standard message, kinda frivilous dontcha think? i'd say its a mIRC bug.

Yes but if you actually go to one of the networks the original poster listed and test it you'll see that it's a numeric clash and not a script problem.

From 6.15 versions.txt:

It's fairly easy to reproduce:

1. /server irc.undernet.org
2. //raw join #somechan $+ $lf $+ mode #somechan -o $me $+ $lf $+ cprivmsg $me #somechan :Hello

The new mIRC 6.16 has been updated with support for numeric 489 to fix different meaning across networks.