Hey Robert,
No issues installing (after removing all files in App Data and uninstalling the previous alpha)
However, My Hal6 brains did not migrate. One brain looks like it started but its brain size was only a few KB's down from 50 megs. As far as I know, it places upgraded brains in the App Data Zabaware folder, that is where I found the failed migration.
Attempting a second time, (Uninstalling Hal7, deleting app data zabaware folder, uninstalling and reinstalling 6, then installing 7) did not migrate any brains from Hal6.
-Spitfire