Yes Sir. Saw error, and let Prime95 continue its operation for a couple of hours (thinking it was a rare event).
After that, checked logs and noticed that error had been reported continuously for a few hours (same error message).
Stopped work and set up torture test (Blend option). Left PC alone for about 3 days (test ran for 69 hours). Came back and stopped test and checked log. No errors or warnings reported for the 4 cores.
Re-started Prime95 normal work, and noticed immediately same error message displayed.
Stopped it again and started a new torture test for CPUs only (small FFT), and then posted problem on forum.