So there was a horse race without horses. Did it just crash at that point or did it keep going? I can picture it, the stadium is full of people, all of a sudden the announcer shouts out "And they're off!" the crowd looks around startled, just as 10 seconds ago there are no horses, "number three has taken the lead, back to number 8, and number 1". One man shouts that post time isn't for another 1/2 an hour. "And they ran the first quarter in 24.2" The announcer has clearly lost his mind, shouting about horses that aren't there.

I tried Meadowlands on my end and it works fine. I've seen this error before, however. To fix it, simply load the track in the editor, press the export button in the editor, and then once done exporting, close the editor, open the game, and see if it works. Should solve your problem.

Not sure what works and what doesn't so do not download or use until further notice. A new download will be necessary. I will release that within the next 48 hours, unless major problems arise.

UPDATE:
About half way done with re-exporting all the courses..