For some reason I am getting random crashes while using the IR. It pauses (1 to 5 seconds) before crashing to the 3Ds Max report popup. The scene is around 5 million polygons with no displacement in the scene. I have attached a Minidump - If anyone can help solve or suggest something I would be delighted. Thanks Mo.
3dsmax_minidump.dmp (10.5 MB)
Is there a chance you could try reproducing this in Corona Renderer 6 Hotfix 1?
It might be fixed already.
If you are not getting the same thing in version 6 HF1 - then the solution is to use this newer version.
If you are getting the same thing in version 6 HF1 - we will need a new minidump from this version, and other basic info if possible: https://coronarenderer.freshdesk.com/support/solutions/articles/5000524006
I have updated it to Corona 6 hotfix 1. All was going well for a few hours of testing a smaller scene and then it crashed at the end of the session. Before it crashed I added a corona normal map - it rendered for about 20 passes (using the IR) until it finally crashed to the Max report rollout. I have added a mini dump. Hopefully may shine some light on it. Thanks Mo
BTW my computer spec is 3950x AMD Ryzen, X570 Unify motherboard, 64gb (3200mhz) ram, RTX 2060 Geforce with 3 SSDs. Win 10 (up to date) Temperatures of the CPU at full load 66 to 70 degrees.
3dsmax_minidump.corona 6.dmp (8.87 MB)
Hi,
Thank you for sending the minidump file to us. I have logged it into our system for further investigation of the problem. If you can also send us your scene file so, we can try to recreate the crash & give you a solution.
You can use our private uploader to send us the file - Chaos
Do let us know the file name after you have done uploading. 
Regards,
Avi
(Report ID=CRMAX-455)
Hi,
I am just trying to quickly see if you can send us the scene file for out investigation? If yes, you can upload it to our private uploader using this link - Chaos
Once you are done uploading, do let me know the scene file name.
Thanks.
Regards,
Avi
Hello!
After looking at the minidump file it seems the crash is caused by the fact that a crack was used on your system at some point, so we can’t investigate this any further.
To remove the crack files please uninstall Corona and delete everything in “C:\Program Files\Corona”, “C:\Users\row\AppData\Local\CoronaRenderer” and “C:\Program Files\Autodesk\3ds Max 2020\Plugins\Corona_52_max_fix.dll”
Then re-install Corona and activate, if you still experience the crashes then please let me know.
Cheers,
Rowan