Hi, I'm rather new with this whole dual-boxing thing, and I find it quite fun. Since I am moving ahead slowly I don't use to many advanced functions. I have though one issue which I cannot figure out.
I run with two characters, a pally and a shaman. At the moment I "drive" with the pally and the shammy follows. I use a few macros that deals with some basic actions on the "slave" shammy.

One is, casting Lightning Bolt. I use a simple macro:

/assist focus
/cast Lightning Bolt

This works as intended. But why doesn't the following macro work at all?

/assist focus
/cast Earth Shock


I've checked that I am in range and that the cooldown isn't up or anything like that. But it still won't cast. If I manually click on the macro on the shammy the spell goes off. Its really strange.
Any ideas would be appreciated.

Thanks.