I have 47 missions in my Single Missions game folder. I have been playing them all with no problems over the last several months. Then, out of the blue, I started getting CTD's on about 4-5 of them. Nearly all the ones affected are from Tambor's Single Missions Pack, and they all involve a convoy that is being tracked along a certain route, and your sub is on an intersecting course. As the square convoy symbol reaches the point where my sub's radar should detect it....Boom, a CTD! I didn't change anything in the game files, or any changes to my computer, so I am stumped as to what suddenly caused this. Manila Bound, Northern Run, and Ambon Supplies are just a couple that are doing this....Anyone else had this happen?...and if so, is there a fix?