So I don't know if this is a known issue, but at the beginning of the game when you're sent to rescue roland from the dam, if the vehicle damage cheat is on, the game crashes. This is before going to get the bandit truck. Seems to crash some after this point as well. Since it is that specific option, I think I will play without for a while. I just wanted to seeif anyone else was having this issue or if it was just me.
You don't have access to a vehicle on the dam (no catch-a-ride station), so that option should not be on for that map. Unless the code for vehicles was already in memory and/or alter, it very well may crash the game trying to alter something that is not there yet.