Well for some team everything is not ok. First of all see which game it is stopping on on the daily schedule screen and that will tell you the two teams it could be if the message did not tell you which team it was. It could possibly be an AI team.
Things to check for
1. Does the team have 12 players in spots 1-12 who are on the roster and not in the d-league?
2. Is anyone in the starting lineup (spots 1-5) that is listed as OUT?
3. Does every column of the sub matrix have a green check mark?
If it is an AI team that is the issue switch control in the upper right corner to commissioner and then you can fix them. If you still cannot get this fixed go to
www.wolverinestudios.com/support and file a support ticket including the message about what the problem is and attach your game files. Instructions to do this are under HELP in the game menu.