I think I have run into the same problem as Marcost on page 60 in this post.
He said the freeze only happens when engaging vehicel convoy, but he probably missed the problem was acctually caused by the fuel trucks in the convoy.
Marcost also said delete all the class files in the Gurnerfx 4.3 help to solve the problem. I tried to delete all the class files and it works!
Seems the problem was caused by the class files, but which one?
After half hour of grouping test, I have pin pointed the only sinful class file - 15E1127AE68FA29C. As long as I have this class file present in my mod, the game will freeze when I blow up fuel truck.
After I delete 15E1127AE68FA29C, the fuel truck wreckage no longer produce any smoke. No other noticeable difference so far.
Sadly I do not possess the skill to make further fix. I hope this info help those who capable.