Cubase Reverb Effects not working..Roomworks SE

Im using Cubase LE 4 and I was always able to use the effects with no problem. I use the Roomworks SE reverb effect & would go inside the little box above the reverb time & mix thats above it to the right, click in the little box and there would be a bunch of other reverb effects like cathedral, hall effect…etc.

But for the past month, for some reason its not there any more. Does anyone know why?? Its the only effect, that when I click the box and open the folder, nothing loads. Do i need to update something? Or is there something i need to click for it to come? I never had this problem before. It would always come up right away.

Please help I AM DESPERATE! :frowning:

Thank YOU.