I gave it a try but I'm baffled. A couple of potential trouble spots:
- You have the season starting on day 2. I believe schedules must start on day 1;
- You may want to change the file and your game settings to non-balanced games. OOTP sometimes has trouble figuring out how a league with unbalanced divisions can have a balanced schedule, so just change the settings to unbalanced. It won't make a difference in the schedule itself - the "balanced schedule" box in the League Options page is only if you want the game to generate a schedule;
- Check for typos, especially if there are any team numbers higher than 32;
- I don't think this should be an issue, but you have tabs instead of spaces separating your fields;
- Delete the _SL1_ from the file info line. Sometimes, the game gets a bit wonky when it's only dealing with a single sub-league. That really shouldn't make a difference, but I've had success when I omit the SL1 from the file info.
I hope this helps.