Norton 360 preventing installation of Process Explorer and Process Monitor

WS.Reputation.1 is a report by Symantec that that the file is suspicious. One way of being suspicious is: not a lot of people know about it.

See here: http://community.norton.com/forums/clarification-wsreputation1-detection
which says, in part:

WS.Reputation.1 is a detection for files that have a low reputation score based on analyzing data from Symantec’s community of users and therefore are likely to be security risks. Detections of this type are based on Symantec’s reputation-based security technology. Because this detection is based on a reputation score, it does not represent a specific class of threat like adware or spyware, but instead applies to all threat categories.

JK