I use V-Stack on a mac.
Sometimes I use two at the same time with 32 Midichannels on 4 ports.
(Simply copy the programfile, rename it and open both)
When you create for example a new kontakt patch you don`t even have
to save it. It´s all stored in the V-Stack file.
since 1 1/2 years no Crash, no data lost, no trouble.