I've been having this problem with utau, when i open up a ust, and then ctrl-a and press play, the syllables start loading but then it suddenly stops at about 25% of loading them all. this occured with all but 1 of my voicebanks i downloaded. i tried copying and pasting the $read, oto.ini, character, and image from my working utau, but it didnt do anything (the ones that didnt work were only wavs, without the oto.ini file and such).