My macro:
#showtooltip
/cast [target=mouseover, exists] Lay on Hands; Lay on Hands
doesn't work for some reason. If i don't have mouseover it casts the spell, but if I have mouseover, nothing happens. I use the same macro for other spells like
#showtooltip
/cast [target=mouseover, exists] Holy Shock; Holy Shock
And there is no problem. Only with Lay on Hands. I have keybinded it to middle mouse button if that has someting to do with it.