Hello Mark!
The VSL Soundset Installer doesn't install any dlls. Please check the following things.
- Did you install the Vienna Instruments & Vienna Ensemble software?
https://www.vsl.co.at/en/MyDownloads/Software_Installers
- If you have installed Vienna Instruments/Vienna Ensemble properly and they do not appear in the list of available devices, you will have to "tell" Sibelius the path where your virtual instruments and effects are located. To do so, go to Playback Devices/Audio Engine Options/Virtual Instruments and Effects Folder and choose the path where you installed the Vienna Ensemble VST plugin (= the path where the file “Vienna Ensemble x64.dll” is located). If you are using Sibelius 32-bit, you will have to add the folder where the 32-bit version of the Vienna Ensemble plugin ("Vienna Ensemble.dll") is installed. Then restart Sibelius.
Best regards,
Andi
Vienna Symphonic Library