That function does not work.
The only thing you can do with Halion SE is play the Composer Set it came with and you cant even drag & drop that. You have to load it into the instrument.
There are other people having the same problem in the Cubase.net Forums ( What sounds can the Halion SE play)
The Halion SE must have a bug in it.A quick fix would be nice. Also a reply A.S.A.P. would be appreciated, Jim.