[unlimit]

Well, I changed it for myself, and it works perfectly on my target, or my focus, or target of target, or player, or really anything I've set it to so far. o.o

I don't think I quite understand the problem you're describing, wouldn't be plainly simple to use the UnitExists API? Again, I'm not really a programmer. I just see these things in other peoples code, and it looks like it fixes the problem you describe.

http://wowprogramming.com/docs/api/UnitExists

code:AppendCode([[
    local plvh
    if UnitExists("vehicle") then
        plvh = vehicle
    else
        plvh = player
    end
    
    combopoint = GetComboPoints(plvh);
    combopoints = GetComboPoints(plvh) / 5;
]]);