hey, i'm very new to using the utau software and I got the pitch editor plug-in but I'm having a lot of trouble with it. i got a weird error message earlier that I managed to get around but now whenever I try to manipulate the pitch of each note it doesn't work. clicking on individual notes just adds another square instead of clicking and dragging them around. it worked earlier so I don't know what could have gone wrong. has this happened to anyone else and how do I fix it?