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VOCALOID4 Voice Library required for the operation of Piapro Studio is not installed. (E4-C51)
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Category :SupportError when starting Piapro Studio

When you launch the Piapro Studio and get the following message “Database required for the operation of Piapro Studio is not installed.” , check the article below.

・Install the voice library of the VOCALOID4 products of Crypton
To use the Piapro Studio, you need to install the voice library of the VOCALOID4 products of Crypton at least one or more.

After you install them, check again.