Dab Errors

[vas]

ok, so i have a rogue and hunter, on my rogue the bars switch when i stealth and what not.. on my hunter the bar changes when the target is too close for my bow so i can use melee..

but ive been getting these errors, so far i just click them out of the way really fast but its so damn annoying.

on my rogue when i vanish or just randomly it gives me an error box, on my hunter it does the same thing when i need to switch bars..
...\dab_actionbutton.lua:778 attempt to index a nil value
thats 1 i get anyway.. any tips on how to fix this?