When you send it we need all the details. What kind of game is it...generated, scenario, campaign etc etc. As Andy said. That message should not appear unless the are re-enforcements and they shouldn't be there at all and as you are the only one to have ever reported this we'll need any other background info about how you set the game up as possible. SOMETIMES allowing the AI to set up player 2 then the human player breaking in once the game gets interesting and playing from that side can generate re-inforcements in a generated game that now the human player is controling. IDK if that is the case here but when one person reports a message neither of the game designers has ever seen pop up I have to ask lot's of questions
Don