However, this time it's a bit different than before.  Now it's just stubbornly showing thematic starting position for the game.  I think there's a problem with the way the URL is put together because I'm seeing a double plus ("++") sign there in the move sequence, at the point the thematic game actually starts.

Anyone else seeing this?

Can you send a link to the game in question?

Sure thing..  I've noticed it in all my thematic games, of which I've got quite a few right now.

http://www.chess.com/echess/game.html?id=19386258#

ok fixed.

Thanks, Jay!  It's working great now.  Cheers!