Hi terry I am on windoze 7 64 bit. I have no trouble when using Cubase , Beatstep can control multiple vst synths no probs. it just sometimes I don't want to load up Cubase and just want to have a quick play with a couple of stand alone synths. this is where I have the problem. if I go into active midi ports on the synth I can see Arturia beatstep and select it, but when I try and do the same on the other synth, it wont let me select Arturia beatstep, but if I go back to the first synth and DE-select it, then the other one will let me select it, I cant select it for both synths at the same time, but like I said when in Cubase I have no problems
cheers
kevin