During the Jagged Crown quest (Stormcloaks) when I reach Korvanjund I encounter a number of problems. First, when I arrive outside of Korvanjund only Galmar & Ralof are there to meet me no other Stormcloak soldiers show up. Second, instead of Imperial Soldiers when I get near Korvanjund I get attacked by 3 bandits. And lastly, & the biggest problem, when you enter Korvanjund itself the entrance to the rune is blocked off by a broken down pillar & some tree roots thus making the rune inaccessible & therefore the quest cannot be continued. I met Ralof outside of Korvanjund alone just after doing the Joining the Stormcloaks quest but before receiving the Jagged Crown quest & I'm wonder has this caused a potential glitch?
I checked online for solutions to this problem & all I find is references to a glitch caused by starting the Seasons Unending, which I have not done. This is my 2nd playthrough & the quest worked fine on my 1st when I sided with the Imperials. I am playing on PS3. Can anything be done to fix this quest?