Thanks for the MachineID, I was able to locate your crashes with it. To answer your question, that ID is also referenced in your project log under LogAnalytics: SetUserId.
I actually see three recent unique crashes from you. The one you mentioned [UE4Editor_BlueprintGraph! FBlueprintActionDatabase::RefreshAssetActions()] is something we already have reported as UE-7477 and we recently escalated due to it appearing more frequently among our users. (I’m not positive why my initial search did not turn up results from the other users. Though I think I’ve identified an issue with searching our database I need to get resolved)
Another crash you’ve experienced (deleting an asset) [UE4Editor_CoreUObject! FSerialNumberManager::GetAndAllocateSerialNumber()] does seem to be growing in frequency among users. My team is looking into it now for more information, and we will be logging a report for it shortly. (edit: UE-12387)
Your third crash [UE4Editor_CoreUObject! StaticFindObject()] is much more rare, and has only happened a handful of times. It appears to be an issue that occurs during auto-save.
If you have any information on viable reproduction steps we could take to cause these crashes to occur for us, it would be immensely helpful in tracking down the cause and getting it fixed.
Thanks for bringing these to my attention.
P.S. - For future issues, and for others reading this post - please submit any inquiries about crashes you are experiencing to the Bug Reports section of the AnswerHub. This provides us with a better workflow to track and troubleshoot the issues. Thanks!