Hi Jeff,
I successfully installed relata 0.2.4 on sme 5.1.2 beta. It was a while back when I did the install but I do remember the one problem I encountered was that some of the sql scripts didn't work. I was able to cut and paste the sql into phpmyadmin and get it to work. As for the product, it has its ups and downs. It has a very slick GUI, you can easily forget your in a browser based app. Its also pretty fast. The big downside that isn't really advertised is information is not shared between users. Your contacts are yours only, no one else can see them. This may no longer be the case but I haven't checked. Good luck with it!
Thanks,
John