Very well could be Norton's SONAR falsely triggering itself after looking at the files.

http://www.symantec.com/business/support/index?page=content&id=HOWTO54918

http://www.symantec.com/business/support/index?page=content&id=HOWTO54868#v40139626

I upgraded 2 weeks ago on a Windows 8 laptop with Norton installed and it did not detect any problem. Out of curiosity, I also subjected my upgrade files to Comodo Anti-Virus PRO and it also did not detect any problem.


BIAB2025
Windows 10 Pro
WA6NCB
No Longer on a Crappy Laptop!