When I right click a file (to delte, check properites, etc.) I get a Windows Installer pop up screen - "The feature you are trying to use in on a network resource that is unavailable. Click OK to try again, or enter an alternate path to a folder containing the installation package eTrust Antivirus.mis in the box below." The Use source destination is a temp folder. I've tried to fine the *.mis file - it does not exist on my computer.