Having trouble making Teto sing

[Akiroo]

So I've posted this question on another account earlier, but didn't get any help, so I'm asking again cuz I reaally want to make Teto sing. I've been using UTAU for a while, never had a problem with making any voicebank sing, but Teto just won't work. I installed her just like it said on her site, but when I click on the "sample" button a Windows error-sound comes instead of her voice samples. I can't make her sing any notes either. My system is in Japanese so that's no the problem. I've only tried her Sakibi bank, maybe I'll try any of her others voicebanks to see what happens.