I remember this a while back and had the same error today - either co-incidental or it is a bug.
When you assign shirt number 00 to a player and press confirm you always get taken to the classice BB error page.
The shirt number has been assigned correctly but you never get a smooth confirm or get taken back to the player page in question.
Or is it just me?
Also would it not make sense to have 00 before 0 and not at the bottom of the roster or is 00 actually meant to be 100 without the 1 (dumb non-basketball follower question!)