[petrw1]

PS. Windows 10

There have been a couple power outages recently here.
When one of my 5 PCs came up it had lost worktodo.txt and local.txt.
I recreated them and restarted and the PC immediately shutdown (no blue screen...just boom)
I deleted the pminus1 workfiles (on a whim) and it proceeded to work.

The most recent outage; same symptoms. The above did not help.
I upgraded to the newest version here...same result.

I downgraded to the version on the public GIMPS website and now it runs.

I can't be sure it is version related or just a flaky PC.

PS: memtest ran error free.