Skyrim Regain Winterhold bug

So I've been doing the civil war quest in Skyrim and I have sided with the Imperial Legion. I've made it up to the "Regain Winterhold" mission but...

Source: http://forums.ufc.production.sparkart.net/showthread.php?t=119679&goto=newpost

Jermaine Andrè  Yoji Anjo  Ao Hailin  Shinya Aoki  Andrei Arlovski