VST Instrument Sets Explained, Solving Problems

I think I have the same problem as above, I purchased Instrument Set Synthesizers for Cubase LE 5. At one time the new sounds appeared in my HalionOne VST, as I believe was correct. For some reason they have disappeared. I have uninstalled and reinstalled, and repair installed, but the sounds don’t reappear in my HalionOne. Is there maybe somewhere I should point my Plug In manager to find these sounds or move hsb files to VSTPlugin file, perhaps? Any help would be greatly appreciated.