Hmm. I was just looking at this script and I noticed there is no trap on the raw you used Jethro_.
I don't think it's a good idea to halt raw events, especially if you didn't bind them to your event with a trap line.(A #group or a variable) This script is pretty fried. I just loaded it and typed /list

Listing channels

-> #Test 5 [+ntr]

-> #AutoIT 1 [+nt]

-> #Atomreactor 5 [+ntr]

End of /List

Test No external channel messages (#Test)

-
n No such nick/channel

t No such nick/channel

r No such nick/channel

AutoIT No external channel messages (#AutoIT)

-
n No such nick/channel

t No such nick/channel

n No such nick/channel

t No such nick/channel

n No such nick/channel
etc, etc, etc...............

The raw needs to be trapped with a #group ON/Off or a variable set/unset.