Well, I got support to acknowledge me, but I was told it was unreproducible. I figured I'd just give up. The issue was very real on my system. I did 3 successive clean installs of Windows 10 Creators Update. No, Stardock software was NOT the first item I installed, but it was pretty close the first 2 go rounds. I think I installed Microsoft Office 365 first, then maybe Norton Internet Security ... then Stardock. Icon Packager knocked my Windows Live Tiles, taskbar icons, and start button all out-of-whack. I tried uninstalling, turning off NIS, etc.
Anyway, on a whim - and this is with ALL of my software installed and running smoothly - I decided on one last try. I made a restore point and then booted into Safe Mode. Installed Icon Packager. Restarted.
Guess what?!? Everything works perfectly!!!