tigeress:
it's not just you, it's happened to me before and nothing in the tutorial covers it. I think it may have something to do with the elevation...sometimes, when making an elevated path and going from the "rising" to the "flat" path, the pathway goes up VERY sharply and guests can't climb it. When that happens I usually pause the game, delete the section, and play with it until it looks like the elevation is less steep and more gradual. It's a severe pain I agree and hopefully can be fixed in a later edition/patch.
I have gotten in the habit of checking my elevated paths for this problem whenever my guests are VERY unhappy, as usually they are hungry, tired, thirsty and mad when "Stuck" on the ramp. Once i fix that and pick up and "Drop off" said guests near a bench or food stand, they get happier and my fame increases.
Something else I've noticed with elevated paths: over exhibits where elevated paths stretch , I'll find guests randomly walking around IN the exhibit below. I'm guessing they're "falling off" the path... but even with the stone wall path this happens. Also happens with my sky trams, but not jeep circuits.
Anyone else notice this?