you may need to file a ticket -post this in Bug forum, and most likely need to upload your files for the developers to look at.
http://support.ootpdevelopments.com/...p-developments
i looked at your pics and some of the minors have a "few" players. Det. has 36, so when the season begins - 11 of them will drop into the minors. But adding fill rosters with fictional players should have done just that. Allowing ghost players is different. The rosters won't show anyone, but the game won't stop due to that lovely "illegal # of players" issues. Do you have a lot of free agents available to sign? (If you do, you could hold a free agent draft and get a few players that way - but so will everyone else. i see that rule 5 draft is scheduled for this date ... that may get you a couple of players, but they'd have to be on the major league rosters .....
dunno, but if you post this in the bugs forum, open a ticket, and follow the link on how to upload your files (just the .dat files) the developers could look at it and be able (hopefully) see what's causing the issue.
i do know that not full rosters for the minors in Dec. is not really uncommon. It's when it get into spring training/ opening day that it'll stop the game. empty rosters would bother me.
good luck and hope some of this helps.