One thing you can do.. is login to arturia.com into your account. Under "My Products" you will See V Collection 8. If you click on "See More" .. you can click on one of the titles, Patchworks or Synthopedia.. That will take you to the resources page... Yes.. a lot of steps to get to resources - but.. You can then download the installer (and installers and manuals for all the VC products). It's worth it (IMO) to get the installers saved, along with the manuals.
to the point... Run the installer that you downloaded for those libraries. It's easy, and usually works, when ASC is having issues...
Joe