Help with bad file name or number?

I'm new to UTAU and kind of just want to get it to work. I have Uta and Momo downloaded and momo's been unzipped and moved into my voice folder. I've imported both of them and when I right click the scale and go to sound list it says "Bad file name or number" and leaves me with an empty box that I assume should have the sounds in it. Can anyone help at all?

Your PC isn't in Japanese Locale. You should change it or use AppLocale to run UTAU

Also, I don't recall you have introduced yourself yet...

I appologize for not properly introducing myself, I'll get on that right away, but I've been trying to figure this out for the past few days and I just finally broke down ^^;;

but I have applocale and ran UTAU with it, but now I get a "file not found" error for just loading UTAU with AppLocale...

EDIT: It also opens UTAU after saying file not found and says "Subscript out of range" and wont let me close UTAU without using task manager..

I had the same problem, so what i did was downgrade UTAU to a lesser version, and that helped.
I mean sometimes i get the "subscript out of range" but its harmless and doesnt do anything. Try downloading a lower version? Mine is 2.72