Cubase 11 Pro Groove Agent 5 Drum Kit .vstsounds

Hi, For some reason sounds do not play in Future Electronica in Groove Agent 5 in Cubase 11 Pro. I need to know the process of restoring them. The Steinberg Library Manager shows where the .vstsound files are located (exactly where they were always moved to using the Library Mgr. Should I delete them or unregister them first? I tried to download and reload them again from the Download Assistant but that did not reinstate them. Cubase does a search to try to find the sounds but it does not find where they have always been located. Can you help? Thanks!!