Not sure that this is a bug. Could very well be a random crash, but I'm attaching the crash report which has all the software and hardware info you would need.
I have a Corona Light in a Mograph Cloner set to a Grid. Only a few clones, but when I was adjusting the light settings, C4D crashed. I also had the IR window while I'm adjusting the light. I'd say most of my crashes happen when the IR window is open. Interestingly, C4D didn't not give me the usual window saying it had crashed and a message saying the scene was being saved in the crash folder. C4D just blinked out and the crash report I got from the Apple OS crash message.
