Many thanks for the file type details and config backup.
I tried with your config and still don't get a crash. Whatever is happening is quite strange.
Would it be possible to generate a Process Monitor log of the time leading up to and just after the crash?
A log with both registry + filesystem (the first two icons shown in that post's example) turned on might reveal what's happening at the time of the crash, and which components or code within Opus is involved.
Another thing to check is if this started happening with 12.13 and might be due to a change in Opus, or if it's more likely due to a change in something else. The 12.12.x installers can be found in this thread about an issue in 12.13 that a couple of people are seeing which we're also trying to track down: