sometimes its issue with your system, i faced same kinda bugs in another game at 1st a dude helped me but later i loaded the same save in VM and it worked fine there for whatever the reason nd took it from there.. also it's not that worth installing VM just to get to next part unless u r facing it multiple timesi click the window but the story don't go ahead , can you share the save from the pic that you have post? (after you click on the window)