Been having a problem with this quest freezing while on my way to Rivet City to rejoin James (dad) and Dr. Li. It either freezes while 'inside' Rivet City before reaching the Science lab or before reaching Rivet City (probably within the games cell) along the waters edge. I have tried several hard saves (not auto saves) outside of the mentioned areas before preceeding to Rivet City, but every time it freezes. Have deleted all previous saves from earlier games played (not including my current game saves). I have the Xbox GOTY edition installed and have never had a problem with this before, just with my current playthrough. Also, have plenty of hard drive space. I am currently at level 15, have completed the dlc's OA, The Pitt and Point Lookout main quests.

Tried using this forum's software section and this forum to find an answer before asking in this forum, as well as the Wiki pages with no suggestions for fixing this glitch or freeze. Any help would be much appreciated. Thanks in advance