Another season, another failure - where did it all go wrong for Celtic?

[Getty Images]Six attempts to qualify for the Champions League in the past eight years. Six successive failures. And a sixth post-mortem for Celtic.Picking through the wreckage of a European campaign has become almost an August perennial when it comes to the Scottish champions. But few of those failures have been quite so wretched as this one.Leading 3-0 from the first leg in Glasgow, Celtic took the lead in Austria. Three quarters through the two-legged tie, they still held a three-goal advanta