A couple of questions to help clarify the method. My DX effects and DXi instruments are in two different Cakewalk folders.
Did you put the two shells in both the Cakewalk
Shared Plugins folder and also in the
Shared DXi folder or just in one? And then you just point the DAW scanner to both of them?
When I tried this, the Sonnitus effects showed up in Cubase, but not the DXi instruments?