So I got as a slayer task to kill some Aviansies... The only problem is, I can't attack them. I'm wearing my range gear, magic shortbow and rune arrows. It doesn't attack, and no text pops up that I would be unable to attack. If I change to mage gear, it starts saying that I need to range them. I switch back to range gear and nothing happens again. My slayer level is 53, ranged level 58.