Hi Peeps,
I've mot managed to sort out this issue, which is a shame really, because, even though I might not use my Korg stuff often, I sometimes get inspiration from them, and they sound so different to my Arturia and uHe synths.
I managed to get my project finished, but each time I opened and then tweaked my MS-20 VSTi, Sonar crashed. I eventually managed to tweak what I needed to via automation.
I've not had time to test my other Korg VSTi synths yet, or indeed any other synths, as my latest project only used that single Korg synth plus an audio track.
I'll report back when I've had a chance to dust off the Polysix and what have you.
cheers
andy