I noticed something weird when collecting the new results this morning - it seems like, for some horses, some classes are showing up with no placing and no points. i had to go to work before I got through all of my horses, but from that initial batch here are a few examples:
http://shc.westveil-estate.com/horse.php?id=00001947
http://shc.westveil-estate.com/horse.php?id=00001980
http://shc.westveil-estate.com/horse.php?id=00001997
It looks like all breeds are affected, and only the 'normal' world shows, not the youth/am/etc ones or non-worlds. There didn't seem to be a pattern of specific classes being affected but my sample size probably wasn't big enough to tell for sure!
Hopefully that's enough info for you to look into it - let me know if I can help in any way!