Key Maps Question

I'm pretty new to multiboxing and decided to give ISBoxer a try after having some issues with keyclone since it's been pretty highly recommended. So far its awesome, but I think I may have something set up incorrectly. I'm sure it's something obvious, but I'm not seeing it. I'm using two different computers, to each run it's own instance of WoW. I followed the instructions and used the wizard to create two character sets (complete with the default Key Maps on each set), each with only one character on the set. 'm able to successfully launch both windows, login, and ensure that ISBoxer is checked in the addons menu.

Once I login, it's a different story. The default invite command (Shift+Alt+I) doesn't appear to broadcast to the other computer, nor does the default FTL Follow Me (Alt+F). In fact, the only thing I've been able to get working successfully was if I turn on Repeater (Shift+Alt+R) and I'm able to mirror my hot key actions, movements, etc.

Now I have invite, follow, & assist macros set up in WoW for different spells, etc, so I can cast spells using those, but not using by using anything under keymaps. Before I went through trying to tweak the keymaps, I just wanted to make sure they were working properly, which it appears I have something wrong.

I do also run Jamba - and that is the only other mod I have running with ISBoxer.

Attached is the config info from ISBoxer.

Thanks for any direction you can give.

EDIT: I am able to use ISBoxer just fine if I launch two instances of WoW on the same computer. I am only having the issue listed above if I try to run it across two physically separate computers (but on the same network).