MSBT Party Proc notifications - help!

[Akoko]

I'm looking for some help with triggers & notifications in MSBT. I'm trying to get a message to appear on my main character's screen when a slave procs missile barrage. I've followed this tutorial exactly: http://www.youtube.com/watch?v=Fvt-cmKWWbY&hd=1

However, the notifications only appear for the character that procced it on that character's screen. I can't get any character to recognize the procs of any other character! My two mages are named Autohotkey and Keyclone, by the way. Autohotkey is the one I usually use as the master.

Here's the trigger I'm using:
Main Event: Aura Application
Event Conditions:
Recipient Unit Name - Is Equal To - Keyclone
Skill Name - Is Equal To - Missile Barrage

I swear, I've fiddled with this for hours and I just can't figure out why it's not showing the slave procs! And yes, both triggers are enabled and neither have any exceptions.

Thanks in advance for any help.

Edit: Party damage is working - I can see my slave's damage for every spell he casts on my main screen, if that's any useful information.