I'm having the same problem. I've set XPize to load at startup, and selected Small Icons. The first time I rebooted after installing, the icons ended up in a grid, apparently the default arrangement. I then grouped them and spread the groups over the entire display, still keeping them aligned to grid. The next time I rebooted, I first saw the original, larger icons, roughly in the same locations as I had grouped the small ones, then they switched to the small icons and reverted back to the default arrangement. Is there a way to get XPize to remember the layout of the icons between reboots?