It seems as soon i get to the part where who i am assuming is derek hands mc a vile the game wont let me proceed with any option i keep getting this pop up saying there is an error. 
It seems as soon i get to the part where who i am assuming is derek hands mc a vile the game wont let me proceed with any option i keep getting this pop up saying there is an error.
same thing happened to me and i continued from a previous save. I will start a new and go from there.
** restarting seems to have fixed that issue.