issue with loading containers in port mission

[greeves]

I had no problem moving the 2 small containers with the truck thing and the first large container with the crane onto the first truck. But when i try to load the second container on the second truck it won't work. I tried it  100 times and no matter where i leave it on the truck, when i unhook it from the crane and raise the crane loader the game does NOT go into the cut scene where the supervisor on the ground says something to trevor about taking a break or whatever. When i load the first container the guy on the guy tells me when to rop it and which way to move it. Second one gives no guidence and like i said, i have dropped that [email protected] container onto the truck every possible way.  I'm about to give up because nothing works and I'm sick of this mission. But i've played it before and i know the game won't advance till i do it. Don't recall having this issue before. Any idea how to make this work?