WPI 5.6 with XP or Vista

[Cteckie]

I could not get WPI to install, the program ran but when I selected a program to install I got a script error both on the installer and on the pngbehavior.htc. When I went to file explorer and right clicked on file and went to properties I noticed an additional block that states these files came from another computer and I had to unblock the file. Once I did that to both files, my installs went fine... Not sure if anyone has run across this but it's a fix... Must be a patch that Microsoft pushed...