If there is'nt any files, then it look like you for some reason don't have any libraries installed, or you have them elsewhere. That seems to be the problem. I don't know why.
You can contact Arturia support directly thru your user account.
EDIT: The Library path set in Spark VDM shall be the path where you have installed your library, if you have your libraries installed somewhere. You can search your computer for them. EDIT END