I have the images of 4 mounted disks. Disk 1 of 4 has a file called "Install-PageStream3." Then when I select All Files, there is another Installer which pops up a script window, so that one doesn't work either.
It sounds very tricky, then. Sounds like install script doesnt like being installed from an ADF. I have never used PageStream so I dont know how difficult installing it by hand could be.
Can you check what is Default Tool defined for Install-PageStream3 file? You can find it from Information window (right mouse click on an icon and Information).