🚀 go-pugleaf

Ok, I've seen this topic posted and the solutions I've seen are not working here. I had a user call this morning Reader was already installed and working on the machine previously, but now all of a sudden it would launch, the menu bar would appear but you couldn't access the program. I trashed all the prefs - no change. I then tried to reinstall reader from my original CD. It would get as far as finishing installation and then the machine freezes. I've tried reinstalling with all extensions off, the base set and all the apple extensions, no luck it still freezes. I have to force quit the installer. After I reboot it appears that the program has installed, but it runs through the splash screen the menu bar comes up and I'm right back to where I started. This is a Macintosh G3 running OS 8.6 and I am trying to install 5.0.Any suggestions?