Hi there! I'm a HUGE Arturia Fanboy!
Unfortunately, I am REGULARLY experiencing the same problem as AlexKeyboards in this post you replied to.
I'm using Ableton and not MainStage.
I'm very unsatisfied so far with this purchase.
I am attaching all of the details of my most recent crash, but I am getting so many crashes that if you need more, I can certainly send more.
Would you like me to send you ALL of my crash logs?
The V Collection 5 products are crashing my Ableton Sessions more than 50% of the time when i'm trying to add them to my sessions.
From V Collection 4, I generally only experienced crashes from SEM and Solina, so I just stopped using them.
The more stable plugins for me have always been the V4 versions of Prophet, Jupiter, and Mini, and have become the core of my music process.
The new Browser UI across the V5 collection is such an important tool, but until it stops repeatedly crashing my system and creativity, it will just continue to be money I have wasted. I won't/can't use these plugins.
This same crash just happened twice in a row, just trying to OPEN Ableton on a fresh bootup at the start of my day.
My "Default Session" automatically loads Ableton with 2 Arturia Plugins ready to go:
1.) Prophet V2 (I've been using this for over a year... Has rarely caused crashes)
2.) Analog Lab 2 (Just added this to my Default Session Template on Friday when I upgraded to V5)