I am having similar issue but it is exclusively on the Mac platform. I manage a college lab and have put our Vienna Symphonic cube on a moderate Mac running 10.5.6. The elicense app says all is good and displays the complete authorization for the package. Software and samples were all installed as the lab admins. The Stand alone player will only show the library when it is run from this lab admin user account.

If I log in as a student there is no library. While still logged in as student I run directory manager for VSL and the library is displayed yet still not in the stand alone player.

perplexed ... any Ideas?