Roadrunner,
I know this doesn't really help, but RB v1.4 works fine on my Vista PC. My alerts save okay.
Question. When you run Radarbox, does Vista ask you for permission for it to run with Admin priviledges. Even though you're setup as an Admin user, you still have to explicity give Radarbox permission to run with Admin privileges.
The desktop icon should have a multi-colour shield on it like this, and the shortcut properties will have these compatability settings:
I agree though, Radarbox shouldn't need Admin privileges to run.