I'm getting this error:

If you can't see it, or don't want to, it says:
Codebase Error
Error #: -70
Error #: 91102
Reading File
dfile4...()
And then it gives the address for the players.dbf inside the Working database .
Basically what I've been doing is, through database editing, I tried to add to a new roster a bunch of legendary players, so I could then play them in a new dynasty, and it was working fine, until I try to finish the month of November, then it crashes and I get that window.
Anybody know if it's possible to fix it? and/or how to?
Thanks.