Problem switching on my AR MKI + vst missing on Live

hello everyone,

I want to share with you a couple of problems Im facing with my AR since I updated my iMac system.

First problem is every time I switch on my AR, my imac restarts itself. I dont know what to do.
macOS 10.13.6
AR firmware: Analog-Rytm_OS1.61E.syx

Second problem is I am not able to load AR as plugin or audio unit on Ableton Live.
Overbridge version: 2.1.5.4

Any idea? Any additional info I should post here?

Thanks in advance :pray: