Roster/rookies question

[Dee15]

Hello community I have a question regarding my roster,I have my own roster and lately I put on 20+ rookies (create player,edit in reditor put cf etc..) yesterday I put all of them on teams who drafted them and all of sudden when my game loads it crashes to desktop,I mean i can't get into game,menus and all is ok but when I try to enter exibition game,blacktop or practice it crashes on loading screen.I restored my older roster and it works but then again i want to make new roster with new rookies but it keeps on crashing,I edited all of the players their (years.pro etc) and game keeps on crashing,do you have any advices/ideas how to fix this and have regular roster with rookies on ?