When starting the saved game during the last week (week 51) of season one and progressing to week one of season two, I got similar yet different error messages for the same error. The first error message was "Warning: league_team_movements_assign_dest: no room in league NPSL Mid-Atlantic Division for team Monmouth." The second warning message was "Warning: league_team_movements_assign_dest: no room in league PDL South Atlantic Division for team Nashville."
For some perspective, the above errors are being produced after a promotion and relegation play-off between 8 teams between the USL division and the related PDL and NPSL divisions. The promotion and relegation play-offs are divided into east and west regions, where the three tiers only play the related teams in their region for promotion and relegation. So for the MLS and USL promotion and relegation, teams from MLS East and USL East will face off against each other and MLS West and USL West will face off against each other. As for USL and PDL and NPSL, it is USL East face off against the winners of PDL Eastern Conference and Southern Conference and NPSL Northeast Conference and South Conference. The USL West will face off against the winners of PDL Central Conference and PDL Western Conference and NPSL Midwest Conference and West Conference. But then, each conference in the PDL and NPSL has either 2, 3 or 4 divisions in them, so that the PDL and NPSL East has 13 divisions and PDL and NPSL West has 11 divisions.
So with this example that is causing the error, the error is from the USL and PDL/NPSL East Promotion and Relegation Play-off. Since it is the first one that reports, it could be assumed that the west promotion and relegation play-off may produce errors too.
The eight teams in this play-off are: from the USL East (New York R.B. 2, Louisville City, Tampa Bay R., and Nashville), PDL East Conf. (Boston B.), PDL South Conf. (Tri-Cities O.), NPSL Northeast Conf. (Monmouth), and NPSL South Conf. (Wichita).
The order in which they finished from first to last is as follows:
(1) Tampa Bay R. (2) Louisville City (3) Tri-Cities O. (4) New York R.B. 2
(5) Wichita (6) Monmouth (7) Boston B. (8) Nashville
As only Tri-Cities O. and Nashville would be switching places in this example, even mentioning Monmouth makes no sense as it is presumed that although a team made it so far, if nothing was changing, it should go back to the division it started in at the beginning of the season. With relation to the first error message of Monmouth and the league NPSL Mid-Atlantic Division, Monmouth is part of the NPSL Northeast Conference which has three divisions in them: North Atlantic, Mid-Atlantic, and Keystone. Monmouth plays in the Keystone Division and therefore has nothing to do with the Mid-Atlantic Division.
Additionally, with the second error message of Nashville and the league PDL South Atlantic Division, that division is part of the PDL Eastern Conference which has three divisions in them: Northeast, Mid Atlantic and South Atlantic. The representative in the promotion and relegation play-off from the PDL Eastern Conference was Boston B., not Tri-Cities O., who qualified to be promoted. Tri-Cities O. is from the PDL Southern Conference in the Deep South Division. So as for the second error message, they are trying to put a team in a division that hasn't changed and therefore has no space for them.
So I guess that is my dilemma up to this point, among another issue to work on, that being a <delay> tag issue and how to get the play-offs working the way I want them to and having them play on the weeks I want them to instead of how they are being played now. So with this issue of the "league_team_movements_assign_dest." error, hopefully you can help rectify it or at least advise if this is a fixable error or not. I guess it is assumed that if a team comes out of one division, then that division has a free space. Therefore a team can be put in there. Although with my example, as I've got two upper divisions and 24 lower divisions (11 and 13 respectively), maybe the numbers aren't quite working out as not every lower division will send a representative to play against an upper division but only one winner of each region in the lower division can send a representative. Maybe I have to adjust the loser sid to include the conference final instead of each individual division in the lower divisions??
Hopefully you guys can help me out on this one.

Thanks in advance,
will_the_canuck
PS - Please find attached the saved game file that shows this error message and my definitions that I'm using that created this error.