Rob, I also use Sampletank extensively with RB. Worked fine until RB 2012. Since then, Sampletank will still function as vsti and I can convert its tracks permanently to an audio track, but RB will no longer remember Sampletank's settings per channel when the song is closed and re-opened. In effect, RB no longer remembers that Sampletank was assigned to particular channels. I am also still using Win 32. Have you had any such problems with Sampletank?

Terry

BIAB/RB 2018 PlusPak. Dell Inspiron23 running Win10, 12GB RAM, 2.5GHz i7, Presonus AudioBox USB interface.