Page 1 of what lies beneath (r1) problems!

Having waited five weeks for, eventually another disc sent, WLB region 1 from PLAY247.com arrived. The picture quality and sound fantastic until chapter 13, when disc shudders and freezes. The rest of the movie is fine. I have a lg3359e multiregional player, is this a RCE problem or just bad disc and if so how do i go about getting a replacement. This is the only problem disc i have. p.s. Celtic put reserve team out .