I have not run across your particular issue, and have no access to an OS anywhere near as old as 10.4, but I would suggest installing the particular Java version it lists, since it is Java 7 and you have 8 it should just place it inside of 8 and will probably work fine, New versions of Java remove the older but not when done vice versa, so if you have 7, and install 8, 7 will get removed, but if you have 8 and install 7 it will be placed inside of 8. Her eis a screenshot of my PC running Win7, I don't have access to a Mac at the moment, but it works the same way in my experience.
If that does not work your best bet is to call Xerox for help, but I would very much try to reproduce the issue on 10.8 or higher since 10.4 is long past end of life.