I just received a new ZWO ASI294MM Camera. I was using SGP V3.2. I had the cooling parameters set to cool to -15C in 10 Minutes. However, when it starts to cool the temp hangs at around -1C and the power level is no longer increasing. It just hangs there. I hit about on cooling, and when I disconnect the camera SGP crashes. When I relaunch SGP and connect the camera again, it seems to work correctly. I installed SGP 22.214.171.1249 and I get the exact same behavior. I also have ASCOM 6.5SP1 installed along with the latest 9/18/2020 ZWO ASCOM driver. I have tried different power cords, and directly powering the camera and the results are consistent.
A little further troubleshooting showed that this seems to happen the first time launching SGP after a reboot and connecting to the camera the first time. Then after the first SGP crash, I can open SGP without rebooting and it works correctly until I reboot the computer again.