The BP click and deceiver's blight hate each other and don't stack. Did you recently get your 2.0? We had to change daggerfall because it had the originally the same problem.
viewtopic.php?f=10&t=872&start=40What I do for now is attack, daggerfall, 2.0 click, wait until deciever's blight begins flashing, use BP. It's not perfect, but I typically can get it in.
Also, deadly aim also doesn't work well with 2.0 click ... I've pretty much stopped using it at all.