Hi all after the kingston update i discovered that my Studio Instruments collection is disappeared.
I don't use these very much but this is very strange......consider z3ta 2 problem too.
Is there a vsti virus in development room at cake team????

Hi. I have all SI's available on Kingston. Have you tried to do a vst scan, or even a reset and re scan?
Best of luck.

SI instruments are right there where they've always been.
 
Check whether you lost the files (VST directory) or if it is not picked up by VST scan (if so try with rescanning existing plugs option)
 
As regards Z3TA: I had issue which I did not understand (silent periods) and it turned that this is authorization protection (you need to start first time while connected to the web) ...

Check your VST paths in Sonar preferences AND CCC settings.

I believe it was moved to the VST3 section, along with Rapture Session, etc. check there.