We just changed to Era 5.
I have an Isis Engine that won't take a schedule. On Train Details, it says it can take all Era 5 goods. I don't see that it takes any of the previous era, but it was working fine in Era 4. Our city hasn't opened any Era 5 goods yet, so I can't test a schedule using those. I'm also not connected to a city that does.
It must have been a bonus engine, because I can't move it to the museum.
It's been idle all day.
Any thoughts on how to correct?