i'm having the same problem and yes i am trying to instantiate it from the instrument slot (i/o). the funny thing is that it works in ableton live and bidule.
v-station and other plugs work just fine. i have already reinstalled, rebooted and deleted the bass station component from the components directory. even plists, etc. nothing works. bass station just won't show up in logic. its not in the au manager either.
after re-install i am able to authorize and use it in live or bidule.
Usual Suspects Entertainment
MacBookPro 2.4 GHz Intel Core i7 16GB RAM | OSX 10.8.2 | HDs (SSDx512, HDDx1TB, Ext HD Thunderbolt x1TB)
Logic Pro 9.1.8 | Motu 828mk3 | Event ASP8 | Yamaha Motif XF8 | Trailer load of VSTs