Not sure whether to post here or Bug Reporting, however, I’m experiencing a crash whenever I make a change in the material editor while IR is running, it could be any change, rotating a HDRI, changing a colour, selecting a different material to edit. I’m using latest Corona (not daily) and Max 2021
For crashes, we need a lot more info, in particular, the minidump - see https://coronarenderer.freshdesk.com/support/solutions/articles/5000524006-how-to-report-issues-3ds-max. For “latest Corona” please confirm the version (because sometimes people think they have the latest, but actually don’t 
).
Opened a support ticket with the mini dump
Corona Version is
6 (Hotfix 1)
Full-speed, Non-debug, MaxSDK 2021
Build timestamp: Sep 25 2020 15.42.13
TY for all the above, definitely appreciated!
No worries, I can send scenes if necessary, they’re just massive and I always have issues archiving scenes with Forest Pack