Recently I tried to run GS3 along with V-Stack, but I simply can't get them to work together.

GS3 works just fine when its' window is open, but when I minimize it to move to V-Stack (or even desktop) it stops responding to MIDI.

Same thing happens with V-Stack, works fine when I'm in it's window, but when I minimize - no sound at all.

I suspect that it's something with MIDI, something needs reconfiguration maybe? I am using Wavecenter card with latest drivers.

thanks in advance for ANY hints, if any other info is needed please ask I'll post it.