Thunderhead Keep Bugged

Standing right in front of it, just chillin and waitin. Even tried to bash my way in with a bit of warrior might. I tried this mission three times last night, all three times I could not get through the gate. The king was alive and standing next to me and I walk up to gate, even try to walk through the closed gate, and nothing happens. Is there a cut-scene here that is supposed to trigger or something? theres a side gate, if you were standing right under all those tundra giants or enslaved frost giants - whatever they were called - thats not the right place to go. go up to theright, up a small hill and theres another door. but i wouldnt be that surprised if it was bugged out, they did some editing in that map, with doors, and as is usual with programming you touch one line and the entire thing goes to hell. so yea.... but make sure you are trying to open the right door.