Board Thread:Questions and Answers/@comment-35787149-20180605033417

I purchased miku v4x bundle earlier this year. I set it up and everything worked well, but now it’s been a while since I used it. When I tried to open it today. A message popped up saying that vocal library required for the operation of piapro studio has not been activated. (E3-C52). I’m confused and I don’t know what to do to fix it.  