Thankyou Marcus for your Reply.
Unfortunately though, I can't do that.
When I go to ESET NOD32 Antivirus > Setup > Advanced Setup > Diagnostics ,
I selected Dump type = Full (I wasn't sure how verbose you needed it to be), then clicked "Create" (diagnostic dump).
It seemed to chug away for a while, that bit seemed fine. But I can't locate the dump.
There is an "Open" link beside "Open diagnostics folder". Instead of going to the diagnostics path, it simply goes to "Computer" (ie: where you see your local C drive etc).
So I tried to navigate to the path listed above it, manually in Windows Explorer, being C:\ProgramData\ESET\ESET Security\Diagnostics . I can navigate to the "ESET Security" folder and I can see the Diagnostics folder in the list, but double-clicking it to open it does nothing, no error or anything, just ignores me. It's weird. Properties on the Diagnostics folder shows it's 0 bytes.
Edit :
I've made a breakthrough. I tried copying the Diagnostics folder to elsewhere and got prompted to elevate access. Clicking Yes allowed the copy to proceed. Don't know why it didn't prompt me before. However you may want to check that the "Open diagnostics folder" function witin NOD32 isn't broken / bug fix / etc.