Ok I thought I might as well post the cause of my problems and the solution.

(thanks goes to Lax and Svpernova09)

My problems was my input locale, the 2 machines had different input locale so the keys where not broadcasted correctly.

Solution:

Put a unique FTL modifier on each toon.
Follow the assist macro fix for multiple computers posted above
Set the input locale to American on both machines
Restart isboxer and innerspace
Load your character sets

*hint you can press F12 in game to see the console, if there are errors like "Could not parse <key>" then you might have this problem

Im off to Ragefire Chasm