Hi, I was having an issue installing .NET as it seemed to encounter problems during installation. Then I realized later that other program installs were having the same encountering problem issues. I checked the Windows installer v4.5 in add/remove programs and it is not listed which seems to me it as well had a problem installing. It is, however listed in the services.msi list. I need to know the best way to look at this. I would like to remove Installer v4.5 and go back to 3.1 to see if that is the problem. Win XP sp3 is the OS