FlStudio 12.0, but after I upgraded to FL 12.1 it started giving me this message. Like I said earlier, prior to upgrading I was still getting the hang of FLStudio 12, so I kept FLStudio 11 around ...
FL 20 and now I can't use FLStudio native format plugins I exported from Synthmaker some time ago. I just get this message when I try to add the effect to a mixer track:
[attachment=0:oukqawzc]< >plugin ...