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[Red Sandwich]

Well, there numerous hints and tactics about this game, but I doubt that you read all through this topic.

Ah, your doubts are unfounded. I most certainly did read through this entire thread. And I've read the manual and a FAQ.

My advice would be building stocks in strategic positions e.g. close to your mines.
On the other hand you can adjust the transport priority in the menus.

Just build the iron related building close together. Same with wood.
That's all advice I cn give you.

Well, this is exactly what I'm doing but it doesn't have any impact on the problem that I'm seeing which looks to me like a program bug.

Icewolf, you didn't say whether you had seen this problem yourself but thanks for your reply.