Runtime error. Program fails to start

[OldGrantonian]

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Full error message:

- "This application has requested the runtime to terminate it in an unusual way."

CN was in almost constant use for about 14 hours today, then hibernated.

On recovery from hibernation, the first attempt to use CN caused the error message.

I restarted laptop twice. After both restarts, I got the same CN error message.

I don't want to try any of the automatic backups until I get advice.

Please advise.

Thanks
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