In case you haven’t already figured out by reading: BFD 3 is now owned by a company called inmusic. Your BFD 1 and 2 are now dead, and not supported. However, those sounds from BFD 1 and 2 have been made into expansions, “Eldorado” and “London Sessions” respectively, so that the “new” BFD 3 can use those sounds, because your old serials for BFD 1 and 2 don’t mean a thing to BFD 3. Neither does their installation, don’t waste your time juggling paths around.
Instead supply Drew with your email and serial numbers, and he will issue new serials for your expansions so that they work in BFD 3.
We’ve all been through this, the migration didn’t automagically sort this issue unfortunately. Just wait for Drew and he’ll sort you out.