I have a problem in campaign mode. I have built the heavy rover and the tipper does not appear.
In a previous game in free / easy mode, I had an error when fully loaded the rover did not move the load, and decided to remove the tipper by cutting it with the radial.
Now, in a totally different game as I say, (Campaign mode) when building the heavy rover, the dump truck does not appear.
Why is this happening? how can I solve that?