To be specific, then, the problem is that a non-FC class isn't recognized anymore by the system (Channeler, Thief, and Martial Artist in this case). So I can't edit the iconic because it hits an error trying to process the now-unknown class.
I wonder, though, what the rules (as in Copyright rules) are on using the Martial Artist. It went sorta free in a Signs and Portents article. Can we host that text somehow, modified for Wyrmstone purposes? It certainly *would* need to be modified, as it's a specific Spycraft class, and the class mechanics changed slightly for FC.
There's a big load of kung-fu in the wyrmstone worlds (like in the lands of the Jade Crown or Celestial Empire, or even Issara), and while a martial artist can be built pretty effectively using the Fist specialty coupled with the Soldier or Priest class, it would be nifty to have an available dedicated martial artist class.