i updated to mac server 1.3.485 today and found something strange. first it seemed to work fine, with just one little quirk, after upgrading, the nebula reverb version has the buffer setting of nebula (128) and vice versa.
then i discovered, that i get crackles in playback, when the prog-page is visible. it plays fine, when i switch to another page (kernel, mast, disk). the crackling even stays, when i close the nebulawindow and the prog page was visible at that point. this is with the au-version.
chek your .xml and look for "Gui refresh" , the latest updates put "30" as default setting but i got nothing than crackles with that valour so i try to put the old default settings (80) and crackling seems gone.