LR CC Quit unexpectedly on new Imac

[curtt70873887]

LR CC latest version Quit unexpectedly on my new IMac running Big Sur 11.2.3. Spent an hour with Apple support to make sure the system was okay. This started to happen after 3 days of running and then would progress to every hour then to every 10 minitues. Removed LR CC and reinstalled ran for 2 days then quit again. Shut off the GPU in LR, still crashed. Imac has 128Gb of RAM with an I9 processor. This seems to have started when I upgraded to MacOS 11.2.3

[cmgap]

Lightroom Classic or Lightroom? Did you install yesterday's Lightroom update?

[curtt70873887]

Running Lightroom Classic the lateest version

[DdeGannes]

Ok what is the exact number, you know like Big Sur 11.2.3.

Waiting for your response!

[curtt70873887]

Mac (Retina 5K, 27-inch, 2020)

Processor 3.6 GHz 10-Core Intel Core i9

Memory 128 GB 2133 Mhz DDR4

Graphics AMD Radeon Pro 5500XT 8GB

Mac IOS 11.2.3

[TheDigitalDog]

First thing to try is resetting preferences:

https://helpx.adobe.com/lightroom-classic/help/setting-preferences-lightroom.html 

If that doesn't work, boot up in Safe mode (hold down S key); does it still crash? 

[curtt70873887]

I reset preferences on 3/18. Set all preferences back to the way I had them and LR CC has run okay until today 3/21 , then shutdown unexpectedly. 

Again running Apple system diagnosis shows no issue with the hardware.