there's a simple workaround: during initial league creation (in your template), fix the sub-league in question so that it has an even amount of teams, either by moving it to another division w/in that sub-league, or, if its a single division sub-league, by deleting a team. start your game, then go into game setup/league setup/edit league structure and either move the team back to its correct division or simply add a team if you had to delete one. once that is done, generate a new schedule so the game takes into account the new league structure; this function is located in the same screen. after that you should be good to go