HI its no fun when the program freezes, i raised a ticket with Arturia over a similar fault they asked me to do this:
Please try to reset the Arp's pref files:
1) Depending on your operating system, navigate to this folder :
Windows ==> C:\ProgramData\Arturia\<product name>\Temp
(you might need to copy "C:\ProgramData\Arturia" in your Windows file explorer address bar to access this folder)
Mac OSX ==>
a) Open Finder
b) Click on the Go menu and select Go to folder ( or just hit cmd+shift+G )
c) Type : /Library/Arturia and click on Go.
d) Open the folder of the concerned product and then the Temp folder.
2) Once you are in the right folder, you will see numerous files with the ".prefs" files. Delete all the ones you can find with the .prefs extension. It will reset your plug-in's preferences files and could solve potential issues.
Also delete the .settings files in the same folder if available.
(Note that it does not actually harm your installation as they are files that are created at the first launch.)
I am a PC user and included the whole of the text they sent me, just use the mac OS part, hope this helps mine hasn't crashed since. If it doesn't raise a ticket with them in the support section. Good luck.