Hello, If I use same instances of a plug vsti (any plug, SFZ player for example) in some tracks (one track = one vsti), Reaper become mad ! No Issue, and it's not a problem about vstis made with Synthedit. I can copy/paste plugs and rename these plugs, but in Reaper, the plugs appear with the same name. ...I create all my pieces with SFZ... :((( Barrail