http://www.kvraudio.com/forum/viewtopic.php?t=330273 ("Serenity-Pro makes noise when loaded in Studio One")
http://www.kvraudio.com/forum/viewtopic.php?t=322805 ("Serenity-Pro makes noise when loaded in FLStudio")
Serenity is one of many synths in the project, and when I open the project, or when I add a new instance of Serenity to the project, there is a very loud burst of noise, which fades off after 10 seconds. (Not very 'Serene'!

Has anybody worked out what causes this, or is there any chance of a fix?