We have updated our forums to the latest version. If you had an account you should be able to log in and use it as before. If not please create an account and we look forward to having you as a member.
Take a look at the unit size designator in the Estab XML.
I recall getting a similar message when I classified a brigade HQ to be company-sized based on a manpower count when I should have designated it as a Brigade organization for command and control purposes.
If I recall correctly, the error was in the "Force Size Icon" designator on Page 29 of the Estab Editor manual. It's not looking for a "size" as in manpower count but "size" as in how large an organization it can control as a command organization.
And now for the code and test part - till I understand all the facets of objectives and getting the AI to more or less do what you expect or want.
I'm pretty pleased with the fact that I've made a map, made an establishment and put a scenario together. The last hurdle is fine tuning and polish.