Problem of picking up cargod with trucks.

Issue description

I had tried all ways to pick up Slag Crushed with trucks from Crusher, but it didn't work. I only can use U-shaped Conveyors to transport them to Loose Storage and let the trucks pick up them to the other place.

Reproduction steps

I don't know.

Game version and build number

v0.5.5d b259

Operating system

Windows

Savegame is needed

Sorry, can't do much without a save file. Feel free to file a new issue if it happens again and please attach a save file.