It's actually not working on a lot of notes for me, but looking at the oto, most of it is empty, so that's probably the reason why, I think. You'll want at least a base one to work with so you can fine tune and edit it later, though I'm not sure of the CV options since I've discovered that Moresampler doesn't do CV. Maybe oremo or setparam could generate one for you, though.
Also, I think your samples in general are just really short, so there's not a lot of room for UTAU to work with orz. I think I've heard that CV samples should at least be a few seconds long, but your samples are less than one. I don't think it's impossible to work with, but if you're capable of recording longer samples, it might help.