Are you close enough to the sparkmaster? The remote controller starts to work only at a certain distance.
Edit: Deleted the other thread as requested.
Edit 2: Sleepy sleepy happy deactivates his melee weapons as far as I recall. You need another combination to discharge his electricity (angry-angry-sleepy or something like this?)
Thanks, I found out about the other command through another forum. But the strange thing is that the commands doesnt seem to allways go through. Sometimes, the droid just stands there like a dummy, other times he blasts away. Well, have to blame Arhu