One problem I'm having in my current game is that heirs mature with zero Command and no V&Vs to suggest why, whereas other heirs in the same line have 4-7 Command. I'm playing a Byzantine campaign for fun, their influence in Early is huge, and it doesn't make sense to me.

I dimly seem to remember that there is some bug that causes the command to be set to zero, but it's been sooo long since I've played or read about MTW that I can't remember the details of it. Do any of you know why this happens?