Mass Effect 3 crashes during Priority Thessia mission

Hi all,

I am having an issue where the game crashes to desktop during the Priority Thessia mission after I used the turret to protect the barrier from the brutes and husks. After I have killed all of them, the game goes to a brief cut scene where Shepard steps down from the turret at which point the game crashes to the desktop.

I have tried the advice of clearing temp files and letting all of the husks reach the barrier and letting the barrier strength do down to half way, but I am still experiencing this issue.

I am using Windows 7 and have tried Vista compatibility, with the same results.

Any help would be appreciated.