Some schedules do not meet required criteria

I have a 32-man user man league and after testing this out my advice is as follows: If the game auto-populates user non-conference games then don't change them. It will break the scheduling logic if you want to make sure all users have 12 games. Even if a user has not joined yet but you know they will, do not adjust a potential user vs. user matchup. Changing those games may make you stuck at 13 and can not save the schedule. Or it will lock you into 11 games for a team and you can not adjust it.

The way I got around all this was by only by editing and opening non-conference games vs CPUs and adding a game vs a User somewhere in my schedule that I know the other user is also free. If I have to edit multiple games, I do one set at a time then save and exit. Then load up again to change the next paring. That way if something goes wrong and doesn't allow me to save I have a better understanding of what the issue is and don't lose any previous work by restarting. 

For example, I have 32 active users in my league: I want to schedule a user game of Arkansas and Wake Forest.

1. I open up one game each from Arkansas and Wake Forest that was against a CPU.

2. I find a week that is open for both of them(like week 3) and add Arkansas to Wake's schedule on week 3. 

3. Back out and save.

4. Go on to the next user pairing game.