Quote Originally Posted by Cambyses II
The vices are probably just bad luck, and as their other stats are ok, the 0 command is probably caused by the command star loop bug. The effect of this bug is that heirs come of age with 0 stars where the king is around 8 or 9 star. This is a common problem for the Byzantine.
Starts at 7 stars, but happens rarely at that point.
AFAIK the wrap-around bug only affects the command on hiers (the kings got it on piety and influence, although the influence one is only temporal).

On the plus side, if you got good other stats, it will only take 2-3 generations to get good commanding hiers again. The low star ones often makes good governors too.