I have nearly finished the tutorial as I am at the stage of 'Build A Basic Conveyor Belt System' on international airport. But I have a problem

[Fredrik]

A fix was applied on the expermintal branch. Try enable that using this guide:

The Airport CEO Experimental Branch

Hello airport CEO! The Airport CEO Experimental Branch has now been made publicly available and is open for anyone to join in on to test the latest bug fixes and features of Airport CEO. But beware, the experimental branch might pack unsuspected bugs that have not been thoroughly tested! The Experimental Branch Workflow The purpose of the experimental branch is to make the default stand more stable. The experimental branch workflow looks like this: A stable version is deployed to the defa…