The version of ThinPrint we bundle is not supported for terminal servers today, it is only licensed for VDI sessions. The View agent won't actually install the component, the services you're seeing are laid down by the VMware tools installer for accessing printers on the host when running inside workstation. As you've seen, while the printers are listed you cannot actually print. I'd recommend not installing the component as part of tools to avoid confusion.
Mike
Edit: clarified ThinPrint does work, but we don't license it.
