Jim,
I ran into a problem installing this on my Mac (OS X 10.4.8 Dual G5). The installer claimed I did not have privileges to install into Applications. I have only one account on this machine and it has admin privileges. Even after changing the "Other" privileges to Read & Write it still would not let me install it. I was able to instll it to Documents.
I'll let you know if I find anything else of significance.
Lynn