Halion Sonic SE & Halion Sonic SE 2

Complication:
Cubase 6 (wich has Halion Sonic SE version 1) and Cubase 8 (wich has Halion Sonic SE version 2) installed on the same computer (Windows 7).
Problem: on Cubase 6 (32 bit and 64 bit) there’s not Halion Sonic SE version 1 but a “blend” of the two versions.
What to do to have it right?
Thanks anybody.