Just checking: Is time one of the things modified? I'm currently failing at the bull lost in spirit cover quest because the bull didn't appear when I burned the hour old track leading just ending (and the ones around for good measure, after a while).
Trying to search further after sleeping, I follow a lot of half day old tracks that disappear into day old overlapping tracks and seem to reappear at some other side (with so many overlapping tracks and half day old tracks it's really not possible to tell which exiting tracks are continuations of which entering ones).