FLStudio and some 3rd party plugs. Most of the time it's been going well but certain plugins shows up with error after plugin scan. These plugins are not new and they are from various developers.
I have all Valhalla ...
FLStudio 12.5.1 in which all the mixer channels have the mix buss or channel buss via "Virtual Mix Rack" vst from Slate Digital. But when I have saved it and reopened it, no plugin was found, except ...