Oh dear.

[Fyron]

Do you have any ministers enabled? The ministers look in the AI files for their behavior.

The problem with the Seor AI is that it is most likely missing a few lines that were added in Gold. Just copy those lines from a default set of AI files into the appropriate Seor AI files and they will go away.

[Litcube]

Yup, you're right. This issue only started when I enabled the minister for one of my transports.. who was doing nothing but sitting at a planet.

[capnq]

The instructions for updating old AIs are linked in my sig.