UTAU will only allow them to sing aeoui?

Here's my problem ; I don't know why , but everytime I want to use a utauloid on the program , all it can sing is aeoui. Whenever I try to make them sing ka to mo , etc , it cuts. ( By exemple ; ka does k-) And I tried many things to fix the problem but it's still not fixed =_= ( put my computer to japanese , delete uta , re-install utau x4867 )

I just don't know what to do .. ^^;

Yes ! They are all configurated

It could be your cutoff and constant for the OTO.ini that is off.

But I could be wrong.

Give us a sound sample ~

Ok so I made my UTAU sing random things and here is what it does : http://www.mediafire.com/?y3mymkyljqo

I think i didn't mention it but it does that to every utau I use ><